I am from Russia, and my father does not pray except the Fajr prayer, and he says that he is busy. What is his ruling in Islam?

Question:
Honorable Shaykh, may Allah grant you success. The questioner says: I am from Russia, and my father does not pray except the Fajr prayer, and he does not even pray it at its proper time. He says that his affairs and work keep him busy. His question is: What is his ruling in Islam, or is he outside the religion?

Answer:
He has the ruling of Islam, but he is ignorant. He abandons the prayer out of ignorance, thinking that he has an excuse. So you explain to him that he has no excuse. He prays and he works; the prayer does not prevent work. He prays while he works, at his place of work if the situation requires it. He prays and does not abandon the prayer. Explain this to him and make him aware of it, because the apparent indication of what you say is that he did not abandon it intentionally. He abandoned it thinking he had an excuse, but he has no excuse. Yes.