Seeking forgiveness for a father who followed a misguided school of thought and consuming his wealth

The questioner:
Yusuf Abd al-Baqi from Sudan says: Is it permissible for a son to seek forgiveness for his father after his death if the father followed a misguided school of thought and wrote amulets and veils for people, taking from them in return either money, gold, or livestock? Is it permissible for his family to take from this wealth? Please inform us; may Allah reward you.

The Shaykh:
If what he writes is in accordance with the Sunnah, and not contrary to the Sunnah, but rather he follows the Sunnah, and he takes a fee from people for his work, then there is no harm in that. Yes.

The presenter:
It was mentioned that he follows one of the misguided schools of thought. Is it permissible to seek forgiveness for him and to consume what he leaves as inheritance?

The Shaykh:
If it does not entail disbelief, if what he follows does not take him out of the religion, then he is a Muslim, and one should pray for him, seek forgiveness for him, and consume from his food. Yes.