Eating foods prepared by a kuffaar for their festivals

Is it permissible for a Muslim to eat the foods that the people of the Book or the mushrikoon prepare for their festivals or accept such foods if they are given on the occasion of their festivals?
Praise be to Allaah.

It is not permissible for the Muslim to eat foods that the Jews, Christians and mushrikoon make for their festivals. It is not permissible either for a Muslim to accept such things that are given to them on the occasion of their festivals, because