Musnad Ahmad 594:5

Waki' narrated to us, he said: Yazid ibn Ziyad ibn Abi al-Ja'd narrated to me, from his paternal uncle 'Ubayd ibn Abi al-Ja'd, from Ziyad ibn Abi al-Ja'd, from Wabisa ibn Ma'bad: "That a man prayed behind the rows alone, so the Prophet, peace and blessings of Allah be upon him, ordered him to repeat [the prayer]."