Musannaf Ibn Abi Shaybah 12409 — The punishment of the grave and what

It is narrated from Sayyidah Asma' (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) said: "It has been revealed to me that you will be tried in the graves (put to trial), similar to, or close to, the trial of the False Messiah (al-Masih al-Dajjal). Then one of you will be brought and it will be said to him: 'What do you know about this man?'" He said: "As for the believer, he will say: 'This is Muhammad, the Messenger of Allah, who came to us with clear proofs and guidance; we accepted it and followed him.' It will be said to him: 'Sleep in peace and safety; we knew that you were a believer in Allah.' As for the hypocrite or the doubter" (the narrator said: I do not know which of the two Asma' said), "he will say: 'I do not know; I heard the people saying something, so I said it too.'"