Proverbs were coined about his clemency and his restraining anger.

Proverbs were coined about his clemency and his restraining anger. The narrators have said: He pardoned him who mistreated him and forgave him who aggressed against him. The narrators have mentioned numerous examples of his clemency of which are the following: A man from the family of Umar b. al-Khattāb was in Medina trying to harm Abū al-Hasan Mūsā, peace be on him. Whenever he saw (Abū al-Hasan) he would curse him and curse Ali, peace be on him.

One day some of those who used to attend his gatherings said to him: Let us kill this sinner. He forbade them from (doing) that most firmly and rebuked them severely. He asked about the descendant of Umar and…