Silsilat al-Ahadith al-Sahihah

Lady Aisha (may Allah be pleased with her) says: A Jewish woman came to me and, mentioning the punishment of the grave, prayed for me that Allah Almighty protect me from the punishment of the grave. When I asked the Messenger of Allah (peace and blessings of Allah be upon him) about the punishment of the grave (whether it exists or not), he said: "Yes, the punishment of the grave is true." Lady Aisha (may Allah be pleased with her) says that after this incident, the Messenger of Allah (peace and blessings of Allah be upon him) used to seek refuge from the punishment of the grave in every prayer.