Musnad Ahmad 572:1

Ismail ibn Ibrahim narrated to us, from al-Jurayri, from Abu al-Ala’ ibn al-Shikhkhir, that Uthman said: "O Messenger of Allah, the devil has come between me and my prayer, and between me and my recitation." He said: "That is a devil called Khanzab. So when you sense him, seek refuge in Allah from him, and spit to your left three times." He said: "So I did that, and Allah the Almighty and Majestic took him away from me."