A man who claims to be a Muslim prays with the Christians in their churches for money; what is the ruling on his action?

Question:
He says: Honorable Shaykh, may Allah grant you success, a man claims to be a Muslim, and he prays with the Christians in their churches, right? A man claims to be a Muslim, and he prays with the Christians in their churches; what is the ruling on the action of this man? And he says: I know that this is not permissible, but I do it in order to obtain my livelihood.

Answer:
This is a professional who makes a profession of prayer; he has taken it as a means of earning, and may Allah protect us from that. This is not permissible for him; it is forbidden for him. His earnings are forbidden. He must fear Allah the Exalted. And this confirms falsehood; their cross means he agreed with them and confirmed them in falsehood. So he is to be feared of falling into apostasy. Yes.