However...
However, the Imam behaved towards the old Syrian like a kind and sympathetic teacher, as if he had experienced nothing from him except kindness and respect and asked him mildly: "Have you read the Qur'an?" He replied "Yes, why not?" Thereupon the Imam said: "Have you not read the verse: Say, O Muhammad! I do not want from you any recompense for my preaching to you except that you should love my kin. (Surah al-Shura, 42:23) The man replied: "Yes, I have".
The Imam said: "I swear by Allah that we are the kinsmen of the Holy Prophet". It may be said with certainty that this very question must have created a tumult in the mind of the man. Then he asked the man: "Have you not read this verse: People of the house, Allah wants to remove all kinds of uncleanliness from you and to purify you thoroughly." (Surah al-Ahzab, 33: 33) He replied: "Yes. I have". The Imam said: "We are the people of the Household whose infallibility has been testified by Allah".
The Syrian thereupon raised his hands in prayer and said thrice: "O Allah! I repent and am regretful for what I have done. O Lord! I am disgusted with those who are the enemies of the progeny of the Holy Prophet and who have killed them. I do not know how it so happened; I have read the Qur'an but did not pay attention to these verses". The fourth Imam got another such opportunity in the court of Yazid when the Ahlul Bayt were brought before him for the first time.
The Imam who had been chained during his journey from Kufa to Damascus said to Yazid: "O Yazid! I put you on oath, in the name of Allah, just to imagine how the Holy Prophet will feel if he sees us in this condition?" These words proved to be very effective. All those who were present there, began to weep and Yazid ordered the fetters to be removed from the body of the fourth Imam.
Another important thing was that the Imam addressed Yazid by name and did not call him, the Commander of the Faithful, as was customary. It was thus recorded in history that the Ahlul Bayt did not call Yazid, the Commander of the Faithful, even when they were chained and made captives and did not recognize him to be the successor and caliph of the Holy Prophet. History of Islam bears witness to the fact that none of the Ahlul Bayt who had been made prisoners addressed Yazid except by his name.
[^1]: The author of Luhuf says: "When Ibn Ziyad ordered that Ali ibn Husayn should be killed, Lady Zaynab said: "O son of Ziyad! If you want to kill him kill me along with him".