It was narrated from Shu'aib bin 'Abdullah bin 'Amr that his father said:
"The Messenger of Allah was never seen eating while reclining or making two men walk behind him." (Sahih)Other chains with the same meanings. (ID)
English reference (ID): Vol. 1, Book 1, Hadith 244 (ID)
Arabic reference (ID): Book 1, Hadith 251 (ID)