Musnad Ahmad 28:89

'Abdullah ibn Yazid narrated to us, Haywah narrated to us, Sharhabil ibn Sharik al-Ma'afiri informed us that he heard 'Abd al-Rahman ibn Rafi' al-Tanukhi saying that he heard 'Abdullah ibn 'Amr ibn al-'As saying that he heard the Messenger of Allah (peace and blessings of Allah be upon him) saying: "I do not care what I commit," or: "I do not care what I ride, if I drink an antidote," or he said: "or I hang an amulet, or I compose poetry from my own self" — al-Ma'afiri is in doubt — "I do not care what I ride," or "I do not care what I commit."