Abdullah bin Badr narrates from Qays bin Talq that Talq bin Ali (may Allah be pleased with him) came to us one day in Ramadan. He broke his fast with us, stood in night prayer and prayed witr with us. Then he returned to his mosque and led his companions in prayer, and he put one of them forward for the witr, (saying): Lead your companions in the witr, for I heard the Prophet (peace and blessings be upon him) say: "There are no two witrs in one night."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4844