Musannaf Ibn Abi Shayba 27:95

Qarrad ibn Nuh narrated to us, he said: Yunus ibn Abi Ishaq narrated to us, from Abu Bakr ibn Abi Musa, from his father, who said: Abu Talib set out for Ash-Sham, and the Messenger of Allah (may Allah bless him and grant him peace) set out with him, along with elders from Quraysh. When they overlooked the monk, they descended and unloaded their baggage. The monk came out to them, whereas before that they used to pass by him and he would not come out to them nor pay them any attention. He said: While they were unloading their baggage, he began moving among them until he came and took the hand of the Messenger of Allah (may Allah bless him and grant him peace) and said: "This is the master of the worlds. This is the Messenger of the Lord of the worlds. Allah will send him as a mercy to the worlds." The elders of Quraysh said to him: "What do you know of that?" He replied: "When you appeared from the mountain pass, there remained neither tree nor stone but that it fell down prostrating, and they do not prostrate except to a prophet."