If it was without intention this does not nullify his islam, he should repent for what he said.

If a person unintentionally talked about KUFR/DISBELIEF, how is he supposed to RENEW his faith again? I mean should he take bath,or do ablution or just isthighfar is ok or should he offer prayer not to commit such act again? Secondly, does it nullify all his previous good deeds even Hajj also?

Apostasy, Character and Morals |