the Messenger of Allah ﷺ said: “When one of you leaves his bed then returns to it, then let him brush it off with the edge of his Izar three times, for indeed, he does not know what succeeded him upon it after him. When he lies down, let him say: ‘In Your Name, my Lord, I lay my side down, and in Your Name I raise it. And if You take my soul, then have mercy upon it, and if You release it, then protect it with that which You protect Your righteous worshipers (Bismika rabbī waḍaʿtu janbī wa bika arfaʿuhu, fa’in amsakta nafsī farḥamhā wa in arsaltahā faḥfaẓhā bimā taḥfaẓu bihī ʿibādakaṣ-ṣāliḥīn)’ And when he awakens, let him say: All praise is due to Allah, Who healed me in my body, and returned to me my soul, and permitted me to remember Him (Al-ḥamdulillāh alladhī ʿāfānī fī jasadī wa radda ʿalayya rūḥī wa adhina lī bidhikrih).’” (Using translation from Tirmidhī 3401)
"إِذا قام أحدكُمْ عَنْ فراشه ثُمَّ رَجَع إليه فلينفضْه بِصَنَفِة إزاره ثلاث مرات، فإنه لا يدْرى ما خَلَفه عليه بَعْدَهُ وإذا اضطجع فْليقُلْ: باسمك ربى وضعتُ جَنْبى وبِك أرفعه فإنْ أمْسَكْتَ نفْسِي فارحْمها وإنْ أرسلتها فاحفظهَا بما تحفظُ به عبادكَ الصالحينَ، فإذا استيقظَ فليَقُلْ: الحمدُ لله الَّذي عافانِي في جَسدِى، وَرَد إليَّ رَوْحِى وأذِنَ لي بذكْرِهِ".
(صنفة الإزار بكسر النون طرفه مما يلي طرتّه وقيل: جانبه الذي لا هدب فيه) .