Musannaf Ibn Abi Shaybah 39359 — The acceptance of Islam by Umar bin

It is narrated from Sayyiduna Jabir (may Allah be pleased with him) about the beginning of Sayyiduna Umar's (may Allah be pleased with him) Islam. He said: Sayyiduna Umar relates: Labour pains came upon my sister one night, so I was sent out of the house. I went into the coverings of the Ka'bah on a cold night. Sayyiduna Umar said: Then the Prophet (peace and blessings be upon him) came and entered the Hijr while he (peace and blessings be upon him) was wearing his sandals. He (peace and blessings be upon him) prayed for as long as Allah Almighty willed, and then he (peace and blessings be upon him) turned to leave. Sayyiduna Umar said: I heard something the like of which I had not heard (before). So I came out and followed him (peace and blessings be upon him). He (peace and blessings be upon him) asked: Who is this? I said: It is Umar. He (peace and blessings be upon him) said: O Umar, you leave me alone neither by day nor by night. Sayyiduna Umar said: I feared that he (peace and blessings be upon him) would pray against me. He said: I said: I bear witness that there is no god but Allah and that you are indeed the Messenger of Allah. He said: He (peace and blessings be upon him) said: O Umar, keep this hidden. He said: I said: By the One who sent you with the truth, I will surely proclaim it just as I proclaimed polytheism.