Ṣaḥīḥ Muslim

Abu Sa‘īd al-Khudri (may Allah be pleased with him) reported: I did not hear it from the Prophet (may Allah's peace and blessings be upon him) but Zayd ibn Thābit reported it to me, as he said: "We were with the Prophet (may Allah's peace and blessings be upon him) in a garden belonging to Banu An-Najjār and he was riding his mule, when suddenly it swerved and almost dropped him off its back.

Then he saw some graves; six, five, or four (This is what Al-Jarīri used to say) and asked: 'Who knows the buried people of these graves?' A man said: 'I do.' He said: 'When did these people die?' The man said: 'They died in the era of polytheism.' He said: 'This Ummah will be tested in their graves.

Were it not that you would not bury one another, I would supplicate Allah to make you hear what I hear of the torment of the grave.' Then he turned to us and said: 'Seek refuge with Allah from the punishment of the Fire.' They said: 'We see refuge with Allah from the punishment of the Fire.' Then he said: 'Seek refuge with Allah from the punishment of the grave.' They said: 'We seek refuge with Allah from the punishment of the grave.' Then he said: 'Seek refuge with Allah from trials, the apparent and the hidden thereof.' They said: 'We seek refuge with Allah from trials, the apparent and the hidden thereof.' He said: 'Seek refuge with Allah from the trial of the Anti-Christ.' They said: 'We seek refuge with Allah from the trial of the Anti-Christ.'"