When I came to the Prophet ﷺ in his house, I saw him sitting reclining on a pillow. The narrator Ibn al-Jarrah added: "on his left side". Abu Dawud said: Ishaq b. Mansur transmitted it from Isra'il, also mentioning the words "on his left side".  

دَخَلْتُ عَلَى النَّبِيِّ ﷺ فِي بَيْتِهِ فَرَأَيْتُهُ مُتَّكِئًا عَلَى وِسَادَةٍ زَادَ ابْنُ الْجَرَّاحِ عَلَى يَسَارِهِ  

"'Umar bin Al-Khattab informed me, saying: 'I entered upon the Messenger of Allah ﷺ and saw him reclining upon a mat woven from fibers, and I could see the impressions it left upon his side.'"  

دَخَلْتُ عَلَى رَسُولِ اللَّهِ ﷺ فَإِذَا هُوَ مُتَّكِئٌ عَلَى رَمْلِ حَصِيرٍ فَرَأَيْتُ أَثَرَهُ فِي جَنْبِهِ  

[Machine] I entered upon the Messenger of Allah ﷺ in his house and I saw him reclining on a cushion.  

دَخَلْتُ عَلَى رَسُولِ اللهِ ﷺ فِي بَيْتِهِ فَرَأَيْتُهُ مُتَّكِئًا عَلَى وِسَادَةٍ  

[Machine] "I entered upon the Messenger of Allah ﷺ and saw him reclining on a cushion on his left side."  

«دَخَلْتُ عَلَى رَسُولِ اللَّهِ ﷺ فَرَأَيْتُهُ مُتَّكِئًا عَلَى وِسَادَةٍ عَلَى يَسَارِهِ»