Hilal bin Yisaf says: Ziyad bin Abi al-Ja'd took me by the hand and stood me beside a man in Raqqah, then said that the Messenger of Allah (peace and blessings be upon him) saw a man praying alone behind the row, so he (peace and blessings be upon him) ordered him "to repeat the prayer." This was Wabisah bin Ma'bad al-Asadi (may Allah be pleased with him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5209