Musannaf Ibn Abi Shayba 3:1632

Waki' narrated to us, from Sufyan, from Abu Ishaq, from al-Harith, who said: A man came to Ali and said, "I prayed and forgot to recite." He said to him, "Did you complete the bowing (ruku') and the prostration (sujud)?" He said, "Yes." He said, "It suffices you."