Musannaf Ibn Abi Shaybah 34491 — Reports on Sad bin Muadh

Mujahid (may Allah have mercy on him) said that Sayyiduna Ibn Umar (may Allah be pleased with them both) said: The Throne swayed out of love for meeting Sayyiduna Sa'd (may Allah be pleased with him). He said: This only means the bier. He said: Its pieces of wood broke apart. He (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) entered his grave and stayed there for quite some time. When he (peace and blessings be upon him) came out, it was asked: "O Messenger of Allah (peace and blessings be upon him), what kept you (peace and blessings be upon him)?" He (peace and blessings be upon him) said: "Sa'd was squeezed once in the grave, so I supplicated to Allah to remove it from him."