(13) باب الأَكْلِ مُتَّكِئًا
Narrated Abu Juhaifa:
While I was with the Prophet (ﷺ) he said to a man who was with him, "I do not take my meals while leaning."
Reference: Sahih al-Bukhari 5399
In-book reference: Book 70, Hadith 27
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 65, Hadith 311