Musannaf Ibn Abi Shaybah 12166 — Those who permitted visiting graves

Sayyiduna Abu Hurayrah (may Allah be pleased with him) says that the Prophet (peace and blessings be upon him) visited the grave of his honoured mother and wept, and those who were around him also began to weep. He (peace and blessings be upon him) said: "I asked my Lord for permission to pray for her forgiveness, but I was not given permission; and I asked my Lord for permission to visit her grave, and I was given permission. So visit the graves, for this will remind you of death." (The remembrance of death will be refreshed.)