Arabic (Original)
حَدَّثَنَا حُجَيْنُ بْنُ الْمُثَنَّي حَدَّثَنَا إِسْرَائِيلُ عَنْ أَبِي إِسْحَاقَ عَنْ أَبِي عُبَيْدَةَ عَنْ عَبْدِ اللَّهِ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ كَانَ إِذَا نَامَ وَضَعَ يَمِينَهُ تَحْتَ خَدِّهِ وَقَالَ اللَّهُمَّ قِنِي عَذَابَكَ يَوْمَ تَجْمَعُ عِبَادَكَ.
English Translation
Hujayn ibn al-Muthanna told us: Isra'il told us, from Abu Ishaq, from Abu 'Ubaydah, from 'Abdullah, from the Prophet, peace and blessings be upon him, that when he slept he would place his right hand under his cheek and say: 'O Allah, protect me from Your punishment on the Day You gather Your servants.'