Lady Zainab (SA) is an icon of purity, bravery, and steadfastness.Though she lived 14 centuries ago, her personality and teachings continue to guide men and women till now/to this day. She is the fruit of the tree of Prophethood nourished by Imamat. Lady Zainab (SA), the daughter of Imam Ali (As), has several attributes and titles associated with her, such as Al-Aqilah the noblewoman, Al-Aalimah or the knowledgeable woman and Aminatu-al-Allah, the faithful of Allah (SWT).
She belonged to a holy lineage; her mother was Lady Fatimah al-Zahra (SA), - the daughter of Prophet Muhammad (PBUH & HP) - and was actually a reflection of her father in the worship of Allah, piety, self-discipline, virtues, clemency, veneration, and the other features of perfection thus her father named her the chief of the women of the worlds and such a great mother nurtured Lady Zainab. 

Lady Zainab’s life

Lady Zainab’s father, Imam Ali (AS) honoured as the representative, successor and heir to Prophet Muhammad (PBUH&HP) was given remarkable titles like ‘the chief of the prophets’ successors’, ‘leader of the pious ones’ and ‘the head of the worshippers’ by Prophet Muhammad (PBUH&HP) himself.  With innumerable merits and unrivalled sacrifices for Islam he was recognised and reputed as the most knowledgeable, the most magnanimous, the most generous, the most abstinent, the most trustworthy, the best worshipper, the most faithful, and above all, the most pious and the bravest of all Muslims. In other words, he was the best Muslim after the Holy Prophet Muhammad. (PBUH&HP).

Lady Zainab  (SA), hence, was  born into the most pious family and raised  under the care of the best human beings therefore she learnt many things that composed her perfect personality from the etiquettes of her parents and her brothers.  Since early life, she was marvellous in her intellect and wisdom and had learnt the Holy Quran by heart as well as the Prophet’s sayings regarding Islamic laws, rules of education and principles of ethics.

Throughout her life she faced one tribulation after another, but emerged strong and victorious in all her trials. She then witnessed the martyrdom of her mother, father and brothers - Imam Hasan and Imam Hussain (AS) - and in Karbala where all male members of her family were brutally martyred including her own sons Awn and Muhammad, and all the women folk were taken into captivity. But despite all these vicissitudes she always remained a source of strength and a caretaker for the survivors of the tragedy of Karbala and the flagbearer of the message of this great event. She is the epitome of selflessness and perseverance, the embodiment of patience and courage in the face of oppressors and the personification of knowledge and purity. Despite all the hardships she endured in Karbala she decided to preserve and propagate the true message of Karbala While her bravery, eloquence, courage, asceticism, chastity and caring nature towards the survivors of the tragedy of Karbala has been and still is unparalleled in history. 

The Holy Prophet Muhammad (PBUH&HP) says, “Whoever tries to fulfil the needs of a sick person, whether they fulfil it or not, they will be cleansed of their sins like the day they were born.”[1] In another tradition,   he has said, “Whoever looks after the sick for an entire day, Allah (SWT) will raise them up with Prophet Abraham.”[2] If we would take only these two traditions into consideration, we can understand the greatness of Lady Zainab (SA) who cared for Imam Sajjad (AS) and all the children and women who had got sick or were injured after what happened in Karbala. Therefore, taking inspiration from her, the 5th of Jamadi-Al-Awwal which is her birthday is celebrated as the Nurses’ Day in the Islamic calendar. 

References:

1.  Kitab Man La Yahzarul Faqih, V.4, Pg.16 
2.   Sawab ul Aamal, Pg. 341
3.    https://www.al-islam.org/lady-zaynab-badr-shahin/life-lady-zaynab 
4.  https://www.al-islam.org/victory-truth-life-zaynab-bint-ali-muna-haeri-bilgrami 

When it comes to how Islam was spread universally, we hear from many that Islam was spread by sword and bloodshed. However, studying the conduct and manner of all the prophets,  and especially Prophet Muhammad (PBUH&HP), in inviting people to Allah unveils the truth about this issue.  

When one decides to start a revolutionary cultural movement, he/she needs to plan for different aspects of this movement. The most important thing is the message he/she wants to convey to the audience. After that, he/she comes to how to spread this message in a way that can be vastly heard, and then it’s time to discover how the message should be said and conveyed to attract the audience. This is the most primary rule in media studies, and prophets in their era were well-aware of these rules and if they needed help regarding techniques and concepts, they received guidelines from Allah to help them spread their message in the most influential way. 

The messages that prophets were going to convey to people were revealed to them by God Allah. The question ‘“how to spread this message” is discussed as a method of invitation. And the question ‘how to make the words influential’ is discussed under the title of manners of invitation in this article. 

The mission of Prophet Muhammad (PBUH&HP)

Allah (SWT) highlights the mission of His Prophet (PBUH&HP) as follows: 

“O Prophet! Indeed We have sent you as a witness, as a bearer of good news and as a warner. And as a summoner to Allah by His permission, and as a radiant lamp.” (33: 45-46)

In this verse, the Prophet (PBUH&HP) is introduced as a “witness” [1]; a person who is present in his society and observes the problems and challenges of people on one hand, and as a person who has the best capability to testify the truth about Allah, His creation, and the hereafter on the other.   

He has the responsibility to invite people to Allah, inform and remind them of the mercy and blessings of their lord and warn them of what is harmful to them. He, as a “radiant lamp” lightens the path of his people toward prosperity. [1].

The methods

But, has God Allah provided His prophet Prophet ((PBUH&HP) with any methods to help him guide people?

In some verses of the Quran Allah (SWT) provides the Prophet (PBUH&HP) with the following methods: 

“Invite to the way of your Lord with wisdom and good advice and dispute with them in a manner that is best...” (16:125)

  Inviting with wisdom

Using this verse, the first step in inviting people to God Allah is to use correct wisdom and reasoning, and since the mission of the Prophet of Islam (PBUH&HP) is to awaken thoughts and ideas and to flourish rational treasures, the best way to achieve this goal is to use logic and reasoning. [2] This method is mostly used for those intellectual people of the society. 

1- Inviting with good advice

The verse introduces “good advice” as a method for communicating with the audience who have softer hearts. “Good advice” is the method in which good deeds are reminded and expressed in such a way that the listener's heart is softened by hearing that expression and, as a result, surrenders. Therefore, for some audience gentle speech is more effective than logical arguments. [4]

2- Inviting with dispute

However, for a group of audience who are stubborn and have prejudice on their ideas, the Quran suggests the method of dispute and argument in a way that is best. 

The definition of “best despite” can be best understood when recognizing what is a wrong dispute. A wrong dispute or argument as described by Imam Sadiq (AS) is “a disgraceful, immodest argument to deny a right, or to accept a falsehood, as a result of your own intellectual weakness, or to do so as a result of the abuse of a rival's intellectual weakness.” [5] 

Therefore, the best dispute is the one in which both parties listen to each other with the intention of learning from and informing each other, and accepting the truth and justice even if it is against our mindset.

3- Based on awareness

In another verse of the Quran Allah (SWT) Commands His prophet Prophet (PBUH&HP) to: 

“Say, ‘This is my way. I summon to Allah with insight—I and he who follows me. Immaculate is Allah, and I am not one of the polytheists.’” (12:108)
In fact, the Prophet of Islam (PBUH&HP), by the command of GodAllah, determines his religion and method to invite all people to this path out of awareness and insight. The followers of the Prophet (PBUH&HP) must also invite the people to the divine religion with awareness and insight.

The manners of prophet Muhammad (PBUH&HP)

Apart from all the methods that Prophet Muhammad (PBUH&HP) knew them well, it was his manner that attracted people to him and his message. 

Mercy to mankind

As Allah mentions in the Quran, Prophet Muhammad (PBUH&HP) was sent to humanity as a mercy and blessing: 

“We did not send you but as a mercy to all the nations.” (21:107) 

Although the great manner and behavior of Prophet Muhammad (PBUH&HP) has been admired in the Quran [6], the difficulty of his mission in interacting with people has been so great that Allah puts mercy and gentleness in his heart: 

“It is by Allah’s mercy that you are gentle to them; and had you been harsh and hardhearted, they would have surely scattered from around you. So excuse them and plead for forgiveness for them, and consult them in the affairs, and once you are resolved, put your trust in Allah. Indeed Allah loves those who trust in Him.” (3:159)

This verse shows that his kind attitude and his sympathy with people has been one of the main tools he used in inviting people to God.Allah.

From among people

Other absorbing characteristics of Prophet Muhammad (PBUH&HP) are mentioned in another verse of the Quran: 

“There has certainly come to you an apostle from among yourselves. Grievous to him is your distress; he has a deep concern for you, and is   most kind and merciful to the faithful.” (9:128)

The verse emphasizes on the fact that the prophet Prophet (PBUH&HP) was one of the people, not considering himself higher than them. He was a man who was so compassionate to the people, and his mind was all concerned about their problems and their life in this world and in the hereafter. 
Although this verse ends with the phrase that he was kind to faithful people, another verse of the Quran shows that he tried so hard to guide and help the unfaithful. So much that Allah (SWT) told him 

“you are liable to imperil your life [out of distress] that they will not have faith.” (26:3)

In sum, the Prophet of Islam (PBUH&HP) used all correct logical, psychological, scientific, and behavioral methods to invite people to truth and the soul of his merciful invitation still flows all over the world through the hearts of the truth-seekers.

References: 

1. Tabatabaei, M.H, Tafseer-e Al-mizan, http://www.aviny.com/quran/almizan/jeld-16/mizan-17.aspx
2. Jawadi Amoli, Abdulllah, ‘the Prophet of Islam’s Conduct and manner in inviting to truth’, Pasdare-e Eslam Magazine, No. 296, (2007, July)
3. ibid
4. ibid
5. Muhammad-Baqer Majlesi, Bihar al-Anwar , vol.70, p. 402. 
6. The Quran (68:4), Surah Qalam , verse, 4