From Sahih Bukhari (Hadith 5415):
Narrated Anas bin Malik:The Prophet (ﷺ) never took his meals at a dining table, nor in small plates, and he never ate thin wellbaked bread. (The sub-narrator asked Qatada, "Over what did they use to take their meals?" Qatada said, "On leather dining sheets)
Reference: Bukhari 5415