Musannaf Ibn Abi Shayba 3:1537

Al-Fadl ibn Dukayn narrated to us, from Sulayman ibn al-Mughirah, from Humayd ibn Hilal, who said: They were on a journey, and Abu Musa led them in prayer. A one-eyed man fell into a well or something similar, and the people all laughed except for Abu Musa and al-Ahnaf. So he ordered them to repeat the prayer.