it is not for the prophet or the believers to ask forgiveness for idolaters even though they are near kindred after it has become clear that they are the inhabitants of hell.
ما كان للنبي والذين آمنوا أن يستغفروا للمشركين ولو كانوا أولي قربى من بعد ما تبين لهم أنهم أصحاب الجحيم