Maliks Muwatta Book 002, Hadith Number 024.

Section : Discontinuing Doing Wudu on Account of Eating Cooked Food.

Yahya related to me from Malik from Yahya ibn Said that he asked Abdullah ibn Amir ibn Rabia whether a man who did wudu for prayer and then ate cooked food had to do wudu again. He said, "I saw my father do that without doing wudu."