Musannaf Ibn Abi Shayba 38:67

Al-Muharibi narrated to us, from Layth, from Mujahid, that Muhammad ibn Abi Bakr—or Muhammad ibn Talhah—said to Aisha on the Day of the Camel: "O Mother of the Believers, what do you command me?" She said: "O my son, if you are able to be like the better of the two sons of Adam, then do so."