Abu Dawud Book 2, Hadith Number 1546.

Narated By Shutair b. Shakl ibn Humayd : I said: Apostle of Allah, teach me a supplication.

He said: Say: “O Allah, I seek refuge in Thee from the evil of what I hear, from the evil of what I see, from the evil of what I speak, from the evil of what I think, and from the evil of my semen” (i.e. sexual passion).