when any of you goes to his bed, he should dust his bedding with the inner extremity of his lower garment, for he does not know what has come on it since he left it. He should then lie down on his right side and say: In Thy name, my mercy on it, but if Thou lettest it go, guard it with that which Thou guardest Thy upright servants. (Using translation from Abū Dāʾūd 5050)
"إذا أتى أحدُكم فراشَه فلينزِعْ داخلةَ إزاره، ثم لينفض بها فِراشَه، فإنه لا يدرى ما حدثَ عليه بعدَه، ثمَّ ليَضْطَجِعْ على جنبِه الأيمنِ، ثم ليَقُلْ: باسمك ربِّي وضعت جَنْبى، وبك أرفعه، فإن أمسكتَ نفسى فارحَمْها، وإن أرسلتها فاحَفَظْها بما حَفِظْتَ به عبادَ الصالحين".