After Prophet Muhammad’s (PBUH & HP) death, Abu-Bakr and Umar ibn Khattab took over the caliphate (the kingdom of the Muslims). One of their most important yet harmful decisions was that they ordered all the Muslims to stop narrating or writing hadiths of the Prophet (PBUH & HP). They argued that if people narrate the hadiths of the Prophet (PBUH & HP), they may confuse verses of the Quran with them or they may forget about memorizing and learning the verses of the Quran. Once Abu-Bakr gathered all people and told them,

[Today] you narrate hadiths from the Prophet while you narrate different and paradoxical hadiths and indeed people after you will do worse. Therefore, do not narrate hadiths from the Prophet anymore and if someone wanted you to narrate, tell them that “we have the Holy Quran. So, follow its rules.” (1)

Qurzah ibn Ka’b (one of the companions of the Prophet) said, 

When we were going to Iraq, Umar accompanied us [until we left the city]. He said, “do you know why did I accompany you?” we said, “because you wanted to respect us”. He said, “in addition to that, I wanted to tell you that you are going to a place where its people recite the Quran like the bee buzz; hence do not occupy their minds with hadiths. Teach them the Quran and tell them a few hadiths of the Prophet (not too many) and I will do just like you. (2)

What they said is actually against the verses of the Holy Quran,

[We sent them] with clear proofs and written ordinances. And We revealed to you the message that you may make clear to the people what was sent down to them and that they might give thought. (16:44)

As you see, Allah almighty says that the Holy Quran needs to be interpreted by the Prophet (PBUH & HP), and without his hadiths, the Holy Quran cannot be completely useful. Writing the hadiths of the Prophet was forbidden for 100 years because of Abu-Bakr and Umar’s orders. Due to their decision, many hypocrites seized this opportunity to make fake hadiths and many people forgot about the Prophet’s (PBUH & HP) lessons.

Imam Baqer (AS)

Imam Baqer (AS) is the fifth Shiite Imam and Imam Sajjad’s (AS) son. His given name was Muhammad, but he was called Baqir al-Olum (shortened to Baqir), because he was a knowledgeable person. The word “baqir” means “splitter” and it means that Imam Baqir (AS) had split the knowledge and started a knowledge revolution as he was a very knowledgeable person. It is said that the Prophet (PBUH & HP) named him Baqir so many years before his birth. (3)

Imam Baqir (AS) lived when the Umayyad dynasty had gotten so weak due to the wars they had, and because of this, Imam Baqir (AS) had the chance to tell people about the teachings of the Prophet (PBUH & HP) after they were forgotten or distorted. He said,

Watch these people who are like the scribes and the monks who hide the teachings of the Quran and distort it… watch them they saved the words of the Quran but distorted its meaning and they are always with the kings and royalties. When the greedy kings and leaders are overthrown, they are with the ones who have more wealth and power and this is the only thing they know. (4) 

Due to the political circumstances, Imam Baqir (AS) was able to have classes and teach people what he had learned from his ancestors in various fields including laws, doctrine, tawhid (monotheism), imamate, interpretation of the Quran, ethics and the like. Accordingly, most Shiite hadiths belong to Imam Baqir (AS) and his son, Imam Sadiq (AS). 

About his father, Imam Sadiq (AS) says,

Before Imam Baqir (AS) Shias didn’t completely know how to perform hajj, what is halal, and what is haram until the time Imam Baqir (AS) performed hajj for them, taught them how to do it, and what is halal and what is haram. Then the Shias didn’t need the Sunnis anymore and the Sunnis started to learn from them instead. (5)

As we said before, during the first three caliphates, the laws of Islam and the teachings of the Prophet (PBUH & HP) were mostly distorted or forgotten by people, and due to this fact, Imam Baqir (AS) had to repeat the lessons for people, especially the Shias. 

Imam Baqer (AS) in the view of the Sunni scholars 

The Sunni scholars all respect Imam Baqir (AS) and believe that he was among the most knowledgeable scholars in Islamic history. They have narrated the hadiths of the Prophet (PBUH & HP) from him and some of their scholars were his pupils.

Abdullah ibn Ata’, one of the Sunni scholars who lived during the same time as Imam Baqir (AS) says,
I haven’t seen anyone like Abu-Jafar (Imam Baqir) whose knowledge of the Sunni scholars seemed so little compared to him. Indeed, I saw Hakam ibn Utaibah (one of the greatest Sunni scholars of those times) with him and Hakam was like a pupil to him. (6)

Resources 

1.  Tadhkirah al-Huffaz, az-Zahabi, vol.1, pg.9
2.  Tadhkirah al-Huffaz, az-Zahabi, vol.1, pg.12
3.   Al-Kafi, Sheikh Koleini, vol.1, pg.469
4.   Al-Kafi, Sheikh Koleini, vol.8, pg.54
5.  Tafsir, al-Ayyashi, vol.1, pg.252 & 253
6. Tarikh Damashq, ibn Asakir, vol.54, pg.278
    

In different cultures or religions, people pay special attention to some specific numbers. For example, numbers 7, 40, and 70 are amongst lucky numbers, and number 13 is known to be a cursed number in some cultures. However, the significance of the number 40 among many cultures and religions is very noticeable. Therefore, this question may arise that what is so special about this number? Can number forty bring luck and happiness to people? Is it a fact or just a superstition? Let’s have a quick look at the background of the number forty in different religions.

Number Forty in Christianity 

Number forty has been mentioned in the Bible in different verses:

1- Jesus (PBUH) fasted "forty days and forty nights" in the Judean desert. (Matthew 4:2, Mark 1:13, Luke 4:2).

2- Forty days was the period from the resurrection of Jesus to the ascension of Jesus (PBUH). (Acts 1:3).

3- Rain fell for "forty days and forty nights" during the Flood (Genesis 7:4). [1] 

Number Forty in Islam 

Number forty is mentioned in the Quran four times: 

1 & 2- Prophet Moses (PBUH) spent 40 days on Mount Sinai, where he received the ten commandments (2: 51, 7: 142).

3- Prophet Moses (PBUH) and his people were lost in the desert for forty years. (5: 26)

4- As mentioned in the Quran, It seems that the age of forty should be the time when a human being is supposed to reach his/her intellectual perfection and understanding of life. This is the time when one can plan the rest of his/her life in a way to gain the most from this world for the hereafter:

“… When he comes of age and reaches forty years, he says, ‘My Lord! Inspire me to give thanks for Your blessing with which You have blessed my parents and me, and that I may do righteous deeds which please You, and invest my descendants with righteousness. Indeed I have turned to you in penitence, and I am one of the Muslims.” (46: 15) 

It is narrated from Prophet Muhammad (PBUH & HP) that “When one becomes forty years old, Allah tells his two guardian angels, ‘From now on, be strict on him and note every small and big deed he does’” [2]. The narration emphasizes that the age of forty shapes the personality of a person, and if he/she is still unable to manage his/her life, it is his/her fault for having wasted his/her life in the wrong way. 

Number Forty in Narrations and the Conduct of Scholars

There are so many narrations from Prophet Muhammad (PBUH & HP) that mention number forty. Here we list a few of these narrations:

1- “He who purifies his faith for Allah for forty days, Allah will flow the springs of wisdom from his heart to his tongue” [3].

 2- “The prayers of the one who drinks wine are not accepted for forty days unless he repents” [4] [i].

 3- “The prayers of a person who gossips would not be accepted for forty days and nights” [5].

Some scholars say that number forty is used to emphasize the significant amount of something.

4- “One who leaves his house to gain a gate of knowledge by which he deviates the wrong towards righteous, or deviance to guidance, his deed is equal to forty years worship of a worshipper” [6].

The Fortieth Day after Burial (Arba’een)

In some cultures, it is a tradition that forty days after a passed-away person’s burial, close relatives and friends gather in a place with the family of the late person and remember the passed-away person and wish peace and patience for his/her family. In this manner, they show the family of the deceased person that they are not alone, and people will help them and support them when required. 

It is based on this tradition, taken from the conduct of the Prophet (PBUH & HP) and his Progeny (AS) that Muslims travel to Karbala on the 40th (Arba’een) martyrdom commemoration of Imam Hussain (AS) and his companions; Not only to sympathize with the household of Prophet (PBUH & HP) on this event, but to show their gratefulness for their courage in preserving the true Islam and the conduct of the Prophet (PBUH & HP). More importantly, Muslims show that the aim of Imam Hussain (AS) is still observed and taken care of. 

Is It OK to Follow the Rules Related to Number Forty? 

Based on the importance that some verses of the Quran and narrations of the Prophet (PBUH & HP) give to number forty, Muslim scholars, especially those who are fond of Islamic mysticism and self-purification, pay special attention to number forty in their conducts and life-style. 

Therefore, there is nothing wrong with trying to benefit from the blessings that the number forty may have. And it is trustworthy because Allah and the Prophet (PBUH & HP) have mentioned it. However, normal human beings do not have a real knowledge of numbers and the wisdom behind them. 

A Logical Interpretation 

As mentioned in a narration earlier, the Prophet (PBUH & HP) says that if you purify your faith for forty days, you will see a great result. [7] The reason is that if one works so hard on his/her spirituality to be able to purify his faith for forty days, it will become a habit for him. Allah says in the Quran, “Be wary of Allah, and Allah will teach you, and Allah has knowledge of all things” (2: 282), which is very much relevant to the mentioned narration. Therefore, one interpretation of doing something for forty days is that whatever you do for this long period, with persistence, will become your habit, and after something becomes a habit, you can easily go on with it for the rest of your life.

Conclusion 

To sum up, there is no such thing as lucky or cursed numbers. And instead of trying to find luck in numbers, one should work hard to develop his personality, spirituality, knowledge, and wisdom. 

But the reason number forty has been mentioned by the Prophet (PBUH & HP), and Islamic scholars might be a symbol of enormousness, meaning that if you persist in doing something for a considerable amount of time, it will become your habit. However, the reason why they insisted on number forty might be because they wanted to spread unique conduct and a specific discipline among the believers. 

Notes:

[i] Some may think that if praying and fasting are not accepted for forty days after drinking, then it will be OK if they do not pray or fast for forty days after they drink. It should be noted that praying and fasting are still compulsory for the person who drinks. However, the sin is counted so huge that they should repent from it, deciding not to commit it again, and say their prayers and perform fasting and other obligations.

References 

1. number in religion
    Al-kafi, Vol 8, P. 108
    Bihar al-Anwar, vol. 67, p. 242
    Mustadrak al-Wasa’il, vol. 17. P. 57
   Al-Kafi, Vol. 6, p. 400
    Amali- e Tousi, p. 118
   Bihar al-Anwar, vol. 67, p. 242
2.