Imam Husayn (a.s) was the epitome of forbearance and magnanimity. Most of the people were astounded at his forbearance. One day a man asked his co-travelers about him, “Who is that wearing the turban of the Prophet, dressed in his clothes and carrying his sword?” They replied, “Do you not recognize him? He is the maternal grandson of the Messenger of Allah (S), Husayn Ibn Ali (a.s).”
Hearing this, he began to abuse and malign the Imam. The Imam said, “O dear man! If the wind of the deserts has created dryness in your head, stay with us for some days so that we may have you cured. If your wife has troubled you and you have come here after having a fight with her, take some money from me and go and make up with her.” The companions of the Imam were surprised at these gentle words. Some of them wanted to revenge that behavior, but the Imam sternly advised against it and said, “We are the mountains of forbearance and nothing can move us.” The man was very regretful of his behavior and he begged the Imam’s pardon.
Reference :Akhlaq al-A’imma, Morals & Manners of the Holy Imams