Quran 9:114 — Ultimatum (Bara'ah)

The only reason Abraham asked forgiveness for his father was that he had promised him to do so. But as soon as he realized that he was an enemy of GOD, he disowned him. Abraham was extremely kind, clement.

[9:113] Neither the prophet, nor those who believe shall ask forgiveness for the idol worshipers, even if they were their nearest of kin, once they realize that they are destined for Hell.

[9:115] GOD does not send any people astray, after He had guided them, without first pointing out for them what to expect. GOD is fully aware of all things.