The Ruling on Greeting Non-Muslims on Their Festivals and Participating in Them

Question:
A questioner asks, saying: What is the ruling on congratulating non-Muslims on their festivals and participating in their festivals?

Answer:
Ask Allah for well-being. It is not permissible for Muslims to participate with the Christians in their festivals, nor to congratulate them on them, nor to attend them. And visiting is the festivals of the polytheists, and witnessing them is attending them. So he does not attend them, nor assist in them, nor congratulate them on them. Even the bid'ah (religious innovations) festivals among Muslims, such as the Mawlid and the like of the bid'ah festivals, it is not permissible for a person to participate in them, nor attend them, nor congratulate on them, nor help them with them, nor eat from the food prepared for them. Because this is from cooperating in sin and aggression. Yes.