What a Person Should Say When They Lie Down to Sleep
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 64
وَقَالَ اَلنَّبِيُّ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ: «مَنْ قَرَأَ هَذِهِ اَلْآيَةَ عِنْدَ مَنَامِهِ: «قُلْ إِنَّمٰا أَنَا بَشَرٌ مِثْلُكُمْ يُوحىٰ إِلَيَّ أَنَّمٰا إِلٰهُكُمْ إِلٰهٌ وٰاحِدٌ» إِلَى آخِرِهَا سَطَعَ لَهُ نُورٌ إِلَى اَلْمَسْجِدِ اَلْحَرَامِ حَشْوُ ذَلِكَ اَلنُّورِ مَلاَئِكَةٌ يَسْتَغْفِرُونَ لَهُ حَتَّى يُصْبِحَ.
The Prophet صلى الله عليه وعلى آله وسلم said: "Whoever recites this verse before sleeping: 'Say, I am only a man like you, to whom it has been revealed that your God is One God' (Surah al-Kahf 18:110) until the end of the verse, a light will shine for him to the Sacred Mosque (Masjid al-Haram), filled with angels who seek forgiveness for him until he awakens”.
- Ṣaḥīḥ al-Faqīh