The Cambridge dictionary defines wisdom as using knowledge and experience to make good decisions and judgments. (1) The most similar equivalent for this word in Arabic is the word  “حکمة” (“Hikmah”) which denotes justice, knowledge and tolerance. (2) 

This word has been used so many times in the holy Quran and has a special meaning in  Islamic literature. The holy Quran says:
Allah grants wisdom to whomever He wishes, and he, who is given wisdom, is certainly given an abundant good, and none takes admonition except those who possess intellect. (2:269) 
About this verse of the Quran, Imam Sadiq (AS) says:
(In this verse) Allah The Almighty has portrayed the intellectuals in the best way. (3)

Hikmah is the message of the Prophets

Allah The Almighty has rapidly pointed out this fact that He has sent the prophets with “Hikmah” and they should teach people how to be wise. The holy Quran says:

Allah certainly favored the faithful when He raised up among them an apostle from among themselves to recite to them His signs (the verses of Quran) and to purify them and teach them the Book and wisdom, and earlier they had indeed been in manifest error. (3:164)
And:
There have already come to them, reports (via the Prophets) containing admonishment, [and representing] far-reaching wisdom; but warnings are of no avail! (4:54)
Also: 
Invite to the way of your Lord with wisdom and good advice and dispute with them in a manner which is the best manner.. (16:125)
And: 
When Jesus brought those manifest proofs, he said, ‘I have certainly brought you wisdom, and [I have come] to make clear to you some of the things that you differ about, so be wary of Allah and obey me. (43:63)

Allah almighty even says that the holy Quran is a book full of wisdom:
These are among [precepts] that your Lord has revealed to you of wisdom. (17:39)
These are the signs of the wise Book (31:2)

What is wisdom in the eyes of Allah?

The original meaning of the word “Hikmah” is wisdom, knowledge and tolerance and the ability to use your knowledge in the best way; but Allah The Almighty prefers some special kinds of wisdom. The verses of the Quran and the hadiths, try to clarify the true meaning of wisdom from Islamic sight.

Obedience towards Allah 

•    Abu-Basir, one of the brilliant pupils of Imam Sadiq (AS) once asked him about the verse; “He grants wisdom to whomever He wishes (2:269)”. Imam Sadiq (AS) replied, “That (Wisdom) is obeying Allah and knowledge about Islam” (4)
•    Imam Baqir (AS) also says that “Hikmah” means: “not to commit the sins that Allah has ordained for it the Hell as a punishment” (5)
•    Once Prophet Muhammad (PBUH & HP) asked a group of people who they are.
They said that they are some faithful people.
The Prophet (PBUH & HP) asked: “What are the signs of your faith?”
They said: “We are content about what Allah has planned for us and we are submissive to the order of our God and we trust in him for everything.”
The Prophet said: “You are so knowledgeable and wise the way that your wisdom can almost make you like prophets.” (6)

Knowing our Imams

Imam Sadiq (AS) about the verse “…and he, who is given wisdom, is certainly given an abundant good (2:269)” said ,“The abundant good is knowing Imam Ali (AS) and the other Imams (AS)” (7) 
He also said: “(The “Hikmah” mentioned in the verse is) obeying Allah and knowing the Imam (of your time)”
In Arabic, the word “جهل” (Jahl) means “Ignorance”, which can be considered the opposite of “Hikmah”. So anyone who is not “Hakim” (wise) is “Ignorant” in Islamic culture. There is a hadith narrated from the Prophet (PBUH & HP) in which he said:

Anyone who dies while they don’t have an Imam will have died like a person in the ages of ignorance (8)

This hadith has been narrated by all Muslims’ Sunnis and Shiites and the authenticity of this record is undeniable. 
About knowing the Imam, Imam Sadiq (AS) also said:
Anyone from among the followers of Prophet Muhammad (PBUH & HP) who understands the status and the rights of their Imam, will find how delightful  having faith is.(9)

Understanding Religion

The last meaning of “Hikmah” mentioned in the Hadiths is “Fiqh” (jurisprudence) which means “Understanding”. In Islamic culture, this word is  employed  to define a deep understanding of religion and profound knowledge about  it . (10)
Imam Sadiq (AS) said: 

“Hikmah is the knowledge about religion and understanding it (Fiqh). Therefore, anyone who understands the teachings of the religion is a “Hakim” (a wise person). Indeed above all, Satan wishes the ones who deeply understand religion, to be dead.” (11)
The Holy Prophet (PBUH & HP) said: 
Allah has given me the Quran and he also gave me Hikmah just like the Quran and every house which therein is no Hikmah is nothing but a ruined place. So learn Fiqh and get to know the religion so that you don’t die like ignorant people. (12)

To wrap up, in the Islamic view, “wisdom” means knowing how to live as a good servant of Allah and living the same way. As you see, all the meanings mentioned in the Quran and the Hadiths are about knowledge of religion and living the way religion indicates. Knowing your Imam (who is the leader Allah has chosen for you) is the best way to understand what you should do and how you should obey the orders of Allah.  It is then obvious that all these different meanings and teachings employ a common concept which is obeying the order of Allah after having enough knowledge about it.  
It is then obvious that all these different meanings and teachings employ a common concept; obeying the orders of Allah after gaining and enjoying competent knowledge about them.

Resources

1.  https://dictionary.cambridge.org/dictionary/english/wisdom 
2. Al-Ain, Khalil ibn Ahmad al-Farahidi, vol.3, pg.66
3. Al-Kafi, Sheikh Koleini, vol.1, pg.13
4. Tafsir noor ath-Thiqhlain, al-Huvaizi, vol.1, pg.287
5. Tafsir, Al-Ayyashi, vol.1, pg.151
6. At-Tohid, Sheikh Saduq, pg.371
7. Tafsir noor ath-Thiqhlain, al-Huvaizi, vol.1, pg.287
8.  Musnad Ahmad ibn Hanbal, vol.28, pg.88
9.  Basa’ir ad-Darajat, Muhammad ibn Hassan as-Saffar, pg.412
10.  Sihah, al-Johari, vol.6, pg.2243
11.  Tafsir, al-Ayyashi, vol.1, pg.151
12.  Majma al-Bayan, Sheikh at-Tabarsi, vol.2, pg.194
     

These days, adultery or having sexual relationships without a marriage contract is becoming more and more normal to people of different faiths and beliefs. This is against all Abrahamic religions that had strictly forbidden adultery. However, those who commit adultery may bring many logical reasons to justify their act. Most people who commit adultery may simply think that this is the natural way of satisfying their biological needs, while not considering themselves as adulterers with a negative meaning. 
Many unmarried men and women believe that experiencing a sexual intercourse with their girlfriend/boyfriend is very important for them to decide if they would like to marry that person and live the rest of their life with her/him. 

Being aware of all different modern ideas about the importance of experiencing sexual relationship before marriage, in this text we try to have a quick study on the idea of Islam about adultery and the reasons and philosophies behind those ideas. 

Mention of Adultery in the Quran 

There are a few verses in the holy Quran that directly speak about adultery and some other verses that indirectly guide people on how to stay away from this vile action. 

To clarify the state of fornication among other sins, Allah (SWT) brings it alongside the greatest sins one may commit: “Those who do not invoke another deity besides Allah, and do not kill a soul [whose life] Allah has made inviolable, except with due cause, and do not commit fornication…” (25: 68). As it is clear in the verse, adultery is counted alongside with infidelity and murder.  

Another indication in the Quran about adultery says: “Do not approach fornication. It is indeed an indecency and an evil way.” (17:32) 

In this verse, apart from calling fornication an indecency, it considers it as a “way”. Allamah Tabatabayi has studied the word “way” in this verse in comparison with the same word in the following verse addressing the homosexual people at the time of Prophet Lout (PBUH): “Do you come to men, and cut off the way, and commit outrages in your gatherings?” (29:29), concluding that the word way refers to healthy reproduction of human beings. He states that the verses refer to the fact that homosexuality and fornication will lead to the weakening of the families and therefore, to the weakening of the society. [1]

Another important point mentioned in the above verse is that it does not say ‘do not commit adultery’ but it emphasizes not to even go near it. Not only being alone with a marriageable kin (Non-Mahram), kissing, touching, etc. may lead to adultery and are forbidden (Haram).  Simpler acts such as looking, talking on the phone, sending text messages or sending likes on social networks, if prepare the grounds for adultery are considered forbidden (Haram). [2]

But how should we keep away from adultery in a world in which media and advertisement encourage and invite people to fornication and adultery?

Quran guidelines on keeping one safe from adultery

When Allah (SWT) emphasizes on not going near adultery, He provides us with practices and the right lifestyle to be able to stay away from it. Some of the tips are mentioned bellow:

1- Controlling the look

It is narrated from Imam Ja’far as-Sadiq (AS) that “An evil glance is one of the poisonous arrows of Satan. Many of such glances becomes a cause of prolonged regret.” [3]

Controlling the look is one of the practices that helps one to be able to control his/her sexual desires. Allah (SWT) teaches us to cast down our looks and not to gaze lustfully at those of marriageable kin (Non-Mahram) or even at animals and things
“Tell the faithful men to cast down their looks and to guard their private parts. That is more decent for them.” (24: 30) 

“And tell the faithful women to cast down their looks and to guard their private parts …” (24:31)

These days the rule applies to the movies, pictures and advertisements, etc. in which the naked or half nude images or films of men and women are visible. [4]

2- Covering beauty

The other approach that the Quran offers to keep the society away from adultery is for women to wear Hijab and cover their body except what is legally observable, such as hands and face. They should also cover their beautification, make up, jewelry, and not even try to announce men of the ornaments they are wearing under their cover by making noises; for example, their bangles and bracelets: 

“… and not to display their charms, beyond what is [acceptably] visible, and let them draw their scarfs over their bosoms … And let them not thump their feet to make known their hidden ornaments …” (24:31)

3- Avoiding flirting and teasing with the opposite sex

Some men and women may even wear the Islamic dress code and not even look in each other’s eyes, but they do not observe the chastity of speech. They should not speak to each other in a soft and enticing voice to encourage each other’s feelings and they shouldn’t make jokes and flirt with each other. 

“…if you are wary [of Allah], do not be complaisant in your speech, lest he in whose heart is a sickness should aspire.” (33:32)

4- Getting married

So if the opposite sexes are not allowed to enjoy being together, what is the whole point of them being created in two different sexes and having attraction for each other?

Allah (SWT) has put this attraction and desire toward the opposite sex for people to make families and reproduce and find peace and calmness beside their spouses: 

“And of His signs is that He created for you mates from your own selves that you may take comfort in them, and He ordained affection and mercy between you...” (30:21) 

Having a family and being loyal to it helps the society to be a safer place in which people can perform their duties and missions in life without being distracted by vain thoughts and concerns. Therefore, Allah (SWT) emphasizes on getting married and helping others to get married:

“Marry off those who are single among you, and the upright among your male and female slaves. If they are poor, Allah will enrich them out of His grace, and Allah is all-bounteous, all-knowing.” (24:32)

And for those who cannot find a spouse for themselves, Allah (SWT) recommends them to keep their chastity: “Those who cannot afford marriage should be continent until Allah enriches them out of His grace.” (24:33) they should trust in Allah’s word and wait for His promise to come true. Sooner or later Allah (SWT) will enrich them as promised: “… And whoever puts his trust in Allah, He will suffice him. Indeed, Allah carries through His commands. Certainly, Allah has ordained a measure [and extent] for everything.” (65:3)

5- Prohibition of being alone in the company of marriageable kin (Non-Mahrams)   

The other guideline for preventing adultery is that the opposite sex of marriageable kin (Non-Mahram) should not stay lonely in a private place together. It is narrated from Imam Ali (AS) that: “A man should not be alone in the company of a woman (marriageable kin (Non-Mahrams)) for in that case Satan will be the third person.” [5]

6- Severe punishment for the adulterer 

After providing all the above hints to people to keep themselves chaste and stay away from fornication and adultery, for those who do not follow the guidelines and insist on committing adultery and have no fear of publicizing it, Allah (SWT) has considered punishments in different levels.  [6]

What if one has already committed Adultery? 

In Surah Furqan, after stressing on the nasty nature of adultery and its great punishment, Allah (SWT) assures His servants that if they regret their deed and repent to their Lord, deciding not to commit their sin again, Allah will forgive them: “except those who repent, attain faith, and act righteously. For such, Allah will replace their misdeeds with good deeds, and Allah is all-forgiving, all-merciful.” (25:70)

Islam tries to bring peace and happiness to human life with its laws and legislations. It also provides life skills by which one can achieve both worldly and spiritual improvement,  

References: 

1. tafsir
2. Tafseer-e Noor, Qara’ati, M. Vol. 5. P. 53
3. tenth greater sins
4. Tafseer-e Noor, Qara’ati, M. Vol. 5. P. 53
5. Mustadrak Al-Wasa’il, vol. 2, p. 553
6. Al-Nour, verses 2-4