What a Person Should Say When They Lie Down to Sleep
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 64
وَ رَوَى اَلْعَبَّاسُ بْنُ هِلاَلٍ عَنْ أَبِي اَلْحَسَنِ اَلرِّضَا عَنْ أَبِيهِ عَلَيْهِمَا اَلسَّلاَمُ قَالَ: «لَمْ يَقُلْ أَحَدٌ قَطُّ إِذَا أَرَادَ أَنْ يَنَامَ: «إِنَّ اَللّٰهَ يُمْسِكُ اَلسَّمٰاوٰاتِ وَ اَلْأَرْضَ أَنْ تَزُولاٰ وَ لَئِنْ زٰالَتٰا إِنْ أَمْسَكَهُمٰا مِنْ أَحَدٍ مِنْ بَعْدِهِ إِنَّهُ كٰانَ حَلِيماً غَفُوراً» فَسَقَطَ عَلَيْهِ اَلْبَيْتُ.
Al-‘Abbas ibn Hilal reported from Abu al-Hasan al-Ridha عليه السلام, from his father عليه السلام who said: "No one has ever recited, when intending to sleep : 'Indeed, Allah سبحانه وتعالى holds the heavens and the earth lest they cease, and if they should cease, no one could hold them [in place] after Him. Indeed, He is Forbearing and Forgiving' (Qur'an 35:41) without being protected, such that even if a house were to collapse upon him, he would be safe."
- Ṣaḥīḥ al-Faqīh