Sunan Ibn Majah
The Book of Purification and its Sunnah
Hadith #32
1.32
حَدَّثَنَا عَمْرُو بْنُ رَافِعٍ، حَدَّثَنَا إِسْمَاعِيلُ ابْنُ عُلَيَّةَ، عَنْ عَبْدِ الْعَزِيزِ بْنِ صُهَيْبٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ كَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ إِذَا دَخَلَ الْخَلاَءَ قَالَ " أَعُوذُ بِاللَّهِ مِنَ الْخُبُثِ وَالْخَبَائِثِ " .
It was narrated that Anas bin Malik said:"Whenever the Messenger of Allah entered the toilet, he would say: 'A'udhu Billahi minal-khubthi wa'l-khaba'ith (I seek refuge with Allah from male and female devils)