A’qabah, the father of Waleed (the governor of Kufah), had once spat upon the face of the Holy Prophet (peace be upon him and his holy progeny) in Mecca. He had joined the ranks of the infidels in the battle of Badr. When the infidels were defeated, Aqabah was taken captive and brought before the Holy Prophet (peace be upon him and his holy progeny), who ordered Amirul Mu’mineen (peace be upon him) to put him to death.
Consequently, his son Waleed, who had been appointed the governor of Kufah during the caliphate of U’thman, always harboured malice towards Amirul Mu’mineen (peace be upon him) and continued to abuse him (peace be upon him) throughout his life.
When Waleed fell ill, Imam Hasan (peace be upon him) paid him a visit. He opened his eyes and witnessing Imam Hasan (peace be upon him) said: I am repentant of all my past deeds and seek God’s forgiveness for them, except the abuses which I hurled at your father, for which I am not repentant.
The Imam (peace be upon him) said: My father had killed your father and had punished you (for consuming wine) and this is the reason of your animosity towards him (and it is this malice that has provoked you to abuse him). ( Kaifer-e-Kirdaar, vol. 1, pg. 109. )