Partaking of meals prepared at a funeral house is an innovation in Deen and hence impermissible. In the Mubaarak Ahaadith of Rasulullah (Sallallahu Alayhi Wasallam) we are taught that when a person passes away then the neighbours and people of the town should share condolences with the bereaved and assist them in their hardship and difficulty. Expecting the bereaved to feed on this sad occasion is in total contrast to the teachings of the Mubaarak Ahaadith. Furthermore, in many cases the wealth that is spent for the feeding is the wealth of the heirs and among them are na-baaligh children. Utilising the wealth of na-baaligh children for such purposes is impermissible in Shari’ah. Even if they(na-baaligh children) consent to this, due to them being under-age their permission is invalid.
-Mufti Zakaria Makada