Musnad Ahmad 32:1026

Isma'il narrated to us, from Yahya ibn Abi Ishaq, who said: Anas said: I came along with the Messenger of Allah, may Allah bless him and grant him peace, I and Abu Talha, and Safiyyah was riding behind him on his she-camel. While we were traveling, the she-camel of the Prophet, may Allah bless him and grant him peace, stumbled, and he fell, and the woman fell. Abu Talha jumped down from his she-camel. He said: He said, "O Prophet of Allah, did anything harm you?" He said, "No, attend to the woman." So Abu Talha threw his garment over his face, then went toward the woman and let the garment down over her. She stood up, and he tightened the saddle for them on their mount. They mounted, and we mounted and traveled until, when we were on the outskirts of Medina, he said, "Returning, repenting, to our Lord praising." He said: He did not cease saying that until we arrived in Medina.