It is narrated from Sayyiduna Amr bin Abasah (may Allah be pleased with him) that he said: I came to the Messenger of Allah (peace and blessings be upon him) in Makkah in the early period of his mission, when he was living in concealment (from the polytheists). I asked: What are you? He (peace and blessings be upon him) said: "I am a Prophet." I asked: What is a Prophet? He (peace and blessings be upon him) said: "The Messenger of Allah." I asked: Has Allah sent you? He (peace and blessings be upon him) said: "Yes." I asked: With what message has He sent you? He (peace and blessings be upon him) said: "That you worship Allah alone, break the idols and maintain the ties of kinship." I said: How excellent is the message you have come with! Who has followed you in this matter? He (peace and blessings be upon him) said: "A slave and a free man," meaning Abu Bakr and Bilal (may Allah be pleased with them both). Amr used to say: I saw myself at the time when I was the fourth person to accept Islam. He says: So I accepted Islam and said: O Messenger of Allah, shall I stay with you? He (peace and blessings be upon him) said: "No, rather go back to your people, and when you receive news that I have emigrated (to Madinah), then come to me." This hadith has an authentic chain, but the two Shaykhs did not record it.