[Machine] The Messenger of Allah, ﷺ , used to put his right hand under his cheek whenever he laid on his bed and say, "O Lord, protect me from Your punishment on the day You resurrect Your servants," three times.  

كَانَ رَسُولُ اللهِ ﷺ إِذَا أَوَى إِلَى فِرَاشِهِ وَضَعَ يَدَهُ الْيُمْنَى تَحْتَ خَدِّهِ وَقَالَ «رَبِّ قِنِي عَذَابَكَ يَوْمَ تَبْعَثُ عِبَادَكَ» ثَلَاثَ مَرَّاتٍ  

When the Messenger of Allah ﷺ wanted to go to sleep, he put his right hand under his cheek and would then say three times: O Allah, guard me from Thy punishment on the day when Thou raisest up Thy servants. (Using translation from Abū Dāʾūd 5045)   

أَنَّ الرَّسُولَ ﷺ كَانَ إِذَا أَرَادَ أَنْ يَرْقُدَ وَضَعَ يَدَهُ الْيُمْنَى تَحْتَ خَدِّهِ الْأَيْمَنِ وَقَالَ «اللهُمَّ قِنِي عَذَابَكَ يَوْمَ تَبْعَثُ عِبَادَكَ» ثَلَاثَ مَرَّاتٍ  

"When the Messenger of Allah would lie down, he would place his right hand under his right cheek, and he used to fast on Mondays and Thursday." (Using translation from Nasāʾī 2367)   

«كَانَ رَسُولُ اللهِ ﷺ إِذَا أَخَذَ مَضْجَعَهُ وَضَعَ كَفَّهُ الْيُمْنَى تَحْتَ خَدِّهِ الْأَيْمَنِ»  

"When the Messenger of Allah would lie down, he would place his right hand under his right cheek, and he used to fast on Mondays and Thursday." (Using translation from Nasāʾī 2367)   

«كَانَ رَسُولُ اللهِ ﷺ إِذَا أَخَذَ مَضْجَعَهُ جَعَلَ كَفَّهُ الْيُمْنَى تَحْتَ خَدِّهِ الْأَيْمَنِ»