Musnad Ahmad 1153:1187

Yahya ibn Adam narrated to us, Zuhayr narrated to us, from Abu Ishaq, from al-Aswad, from Aisha: "The Messenger of Allah (peace and blessings of Allah be upon him) used to perform ghusl (full ablution), then pray the two rak'ahs and the morning prayer, and I do not see him performing wudu (partial ablution) after the ghusl."