Musannaf Ibn Abi Shayba 38:48

'Abbad ibn al-'Awwam narrated to us, from Ash'ath ibn Siwar, from his father, who said: Musa ibn Talha sent for me regarding a need, so I came to him. He said: While I was with him, some people from the people of the mosque entered upon him. They said: "O Abu 'Isa, tell us about the captives tonight." I heard them saying: "As for Musa ibn Talha, he will be killed in the morning." When I prayed the morning prayer, a man came running, saying: "The captives! The captives!" He said: Then another came after him, saying: "Musa ibn Talha! Musa ibn Talha!" He said: So I set out and entered upon the Commander of the Faithful and greeted him. He said: "Will you pledge allegiance? Will you enter into what the people have entered into?" I said: "Yes." He said: "Like this," and he stretched out his hand and spread them both. He said: So I pledged allegiance to him. Then he said: "Return to your family and your wealth." He said: When the people saw that I had come out, they began to enter and pledge allegiance.