Allah's Messenger (ﷺ) said, "I do not take my meals while leaning (against something).
Sahih al-Bukhari Book 70, Hadith 26
← Previous Hadith A man used to eat much, but when he embraced Islam, he started eating less. That was mentioned to the Prophet (ﷺ) who then said, "A believer eats in one intestine (is satisfied with a little food) and a Kafir eats in seven intestines (eats much). "

Sahih al-Bukhari Book 70, Hadith 25 Next Hadith → While I was with the Prophet (ﷺ) he said to a man who was with him, "I do not take my meals while leaning."

Sahih al-Bukhari Book 70, Hadith 27