Who inherits a man killed by his son, from among his son, his maternal uncle, his granddaughter, his grandson, and his non-Muslim wife?

Whoever intentionally kills their inheritor does not inherit from them, by consensus of the scholars. As for accidental killing, the majority view that they do not inherit, while the Malikis and Ibn Uthaymeen hold that they do inherit. In case of dispute, the matter is referred to the Sharia court.

If the father passes away leaving a son (the killer), a maternal uncle, a granddaughter, a grandson, and a non-Muslim wife, then the grandson inherits the estate; based on the Prophet’s (PBUH) saying: "Give the prescribed shares to those who are entitled to them, and whatever remains is for the closest male relative." The non-Muslim wife does not inherit, based on the Prophet’s (PBUH) saying: "A Muslim does not inherit from a disbeliever, nor does a disbeliever inherit from a Muslim." The daughter's children and the maternal uncle are from the uterine kin (dhawi al-arham) and do not inherit in the presence of 'asabah (agnatic heirs) or ashāb al-furūd (recipients of prescribed shares).

If the aforementioned son is not the killer, then he inherits the entire estate, and the grandson does not inherit with him.