Gheebat and Mocking

Mocking and ridiculing people

Q: Person A tells Person B the following joke. He says the memon was in Jahannam when he met his friend. His friend said to him that you were so pious, how did you end up here? The memon replied that I have a place in Jannah, but I put my house in Jannah on rent. Person B laughed at the joke. I am aware that in Surah Tauba that there is a verse which speaks about joking about Allah and his signs and this leading one to come out of the fold of Islaam. In the scenario presented above, do both A and B lose their Imaan and in the process invalidate their Nikah?

Insulting Rasulullah (Sallallahu Alayhi Wasallam)

Q: If someone insults the Prophet Muhammad (Sallallahu Alayhi Wasallam) then should there be any punishment for him, looking at the fact that he did not kill any innocent human being, and as Allah Ta'ala says that we should forgive anyone who says bad words to us, and we should reply with Salaam? I need references from Quran and the Saheeh Hadith, only then I will believe.

Backbiting

Q: If a person has committed backbiting against someone, and wants to make taubah from backbiting, and the person he was backbiting about does not know about it, does one have to go and tell the person I said this and that about you, make maaf, or can one beg forgiveness from Allah and do some good action and send the sawaab to the person?