Sunan Abi Da'ud

Anas b. Malik reported: When the Apostle of Allaah (sal Allahu alayhi wa sallam) entered the toilet, he used to say (before entering): "O Allaah, I seek refuge in Thee." This is according to the version of Hammad. 'Abd al-Warith has another version :"I seek refuge in Allaah from male and female devils."