Musannaf Ibn Abi Shayba 27:82

Abu Mu'awiyah and Waki' narrated to us, from al-A'mash, from 'Abdullah ibn Murrah, from Abu al-Ahwas, from 'Abdullah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "I disassociate myself from every close friend (khalil) because of his close friendship (khullah), except that Allah has taken your companion as a close friend (khalil)." Waki' said: "From his close friendship (khullah)."