it is not for the prophet and those who believe to ask forgiveness for the polytheists even if they are near relatives after it has become clear to them that they are people of hellfire.
ما كان للنبي والذين آمنوا أن يستغفروا للمشركين ولو كانوا أولي قربى من بعد ما تبين لهم أنهم أصحاب الجحيم