Musnad Ahmad 1153:2093

Uthman ibn Umar narrated to us, Yunus narrated to us, Abu Shaddad narrated to us, from Mujahid, who said: Aisha said: The Messenger of Allah (peace and blessings of Allah be upon him) went out, and when we were at al-Hiz, we turned back while I was on a camel. It was the last of the time with them, and I was hearing the voice of the Prophet (peace and blessings of Allah be upon him) while he was between the backs of those acacia trees, and he was saying: "Oh, my bride." She said: By Allah, I was in that state when a caller called out: "Drop the nose-rein." So I dropped it, and Allah restrained it with His hand.