Musnad Ahmad 1016:6

Abu Salamah al-Khuza'i narrated to us, Sulayman ibn Bilal narrated to us, from 'Alqamah ibn Abi 'Alqamah, that he heard 'Abd al-Rahman al-A'raj, that he heard 'Abdullah ibn Buhaynah say: "The Messenger of Allah (may Allah bless him and grant him peace) was cupped at Lahy Jamal, on the road to Makkah, in the middle of his head, while he was in the state of Ihram."