Sayyiduna Uthman bin Abi al-As (may Allah be pleased with him) said: I said: "O Messenger of Allah, Satan comes between me and my prayer and my recitation." The Messenger of Allah (peace and blessings be upon him) said to him: "That is a devil called Khanzab. When you sense him, seek refuge in Allah from Satan and spit (lightly) to your left."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8334