Hilal bin Yasaf said: Ziyad bin Abi al-Ja'd took me by the hand and brought me to an elder in Raqqah who was called Wabisah bin Ma'bad (may Allah be pleased with him), and he said: "A man prayed alone behind the rows, so the Messenger of Allah (peace and blessings be upon him) ordered him to repeat the prayer."
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18596