Abu Hurayrah Radiyallahu 'Anhu says:
"Meat was sent to Rasulullah Sallallahu 'Alayhi Wasallam from someone. From it the forequarter was presented to Rasulullah Sallallahu 'Alayhi Wasallam. He loved this portion (of the meat too). Rasulullah Sallallahu 'Alayhi Wasallam tore the meat with his teeth and ate it". (He did not use a knife to cut it).
English reference: Book 25, Hadith 158
Arabic reference: Book 26, Hadith 167