and ibrahims invoking for his fathers forgiveness was only because of a promise he had made to him . but when it became clear to him that he is an enemy of allah he dissociated himself from him. verily ibrahim was awwah and forbearing.
وما كان استغفار إبراهيم لأبيه إلا عن موعدة وعدها إياه فلما تبين له أنه عدو لله تبرأ منه إن إبراهيم لأواه حليم