Musnad Ahmad 1153:1451

Bahz ibn Asad narrated to us, he said: Hammad narrated to us, from Simak, from Ikrimah, that Aisha said: The Messenger of Allah, peace and blessings of Allah be upon him, entered upon me in my house wearing an izar (waist-wrapper) and a rida (upper garment). He faced the Qiblah, spread out his hand, and said: "O Allah, I am only a human being, so whichever of Your servants I have struck or harmed, do not punish me for it."