Abraham's Call to Monotheism
Abraham sought forgiveness for his father only because of a promise he had made. But when he realized his father was an enemy of Allah, he disassociated from him. Abraham was tender-hearted and forbearing.
9:114The prayer of Abraham for the forgiveness of his father was only because of a promise he had promised him, but when it had become clear unto him that he (his father) was an enemy to Allah he (Abraham) disowned him. Lo! Abraham was soft of heart, long-suffering.