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