Musnad Ahmad 26:841

Ziyad ibn Abdullah al-Bakkai narrated to us, Mansur narrated to us, from Salim, from his father, from Abdullah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "There is no one among you except that his companion from the jinn has been assigned to him." They said: "And you, O Messenger of Allah?" He said: "And me, except that Allah helped me against him, so he submitted, and he does not command me except with good."