Amr bin Wahb al-Thaqafi (may Allah have mercy on him) said: I asked Sayyiduna Mughirah bin Shu'bah (may Allah be pleased with him): Did anyone of the Companions other than Abu Bakr (may Allah be pleased with him) lead the Messenger of Allah (peace and blessings be upon him) in prayer? He said: Yes. I was with the Messenger of Allah (peace and blessings be upon him) on such-and-such a journey. When it was the time of suhur (before dawn), he (peace and blessings be upon him) struck the neck of my mount (with his hand); then he (peace and blessings be upon him) turned aside (from the road), and I turned aside with him (peace and blessings be upon him). He (peace and blessings be upon him) relieved himself, then said: "O Mughirah! Do you need anything?" I said: I have no need. He (peace and blessings be upon him) said: "Is there any water?" So he (peace and blessings be upon him) called for a small vessel or a water-skin, washed his hands and his face, then went to bare his forearms, but the sleeve of the Syrian cloak he (peace and blessings be upon him) was wearing was tight, so he (peace and blessings be upon him) brought his hands out from beneath the cloak and washed them, wiped his forelock, and wiped over the leather socks. He said: Then we reached the people, and the prayer had already begun, and Abd al-Rahman bin Awf (may Allah be pleased with him) was leading them and had already led them in one rak'ah. I went to inform him of the arrival of the Prophet (peace and blessings be upon him), but he (peace and blessings be upon him) stopped me. So we prayed what we caught, and completed what we had missed.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 18163