Reference: Fataawa Manaar al-Islaam q8 p25
Question: What is the ruling regarding someone who abuses the religion or any of the prophets?
Response: Anyone who abuses the religion or abuses Allaah or His messenger, then he is a disbeliever – out of the fold of Islaam, and we seek refuge in Allaah [from that]. [This is the case] even if he believes he is a Muslim. Even the people of knowledge have said: Indeed whoever abuses Allaah, then he is a disbeliever, even if he was joking. And the evidence they use is His سبحانه و تعالى saying:
So, everyone who abuses Allaah or His messenger, or His Book, or His religion, or any of the prophets ﷺ then he is a disbeliever. And it is upon these people to repent to Allaah سبحانه و تعالى and return to Him (to Islaam), otherwise they will be given the glad tidings of the Fire of Hell.
We ask Allaah to guide them, and Allaah is the Expounder of success.
