Hadithcore
Mishkat al-Masabih, 4168

Abu Juhaifa reported the Prophet (ﷺ) as saying, “I do not eat reclining.” Bukhari transmitted it.

وَعَن أبي جُحَيْفَة قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم: «لَا آكل مُتكئا» . رَوَاهُ البُخَارِيّ

References1 variant
In-Book Reference
Book 21, Hadith 10