Sayyidah Aishah (may Allah be pleased with her) said that the Messenger of Allah (peace and blessings be upon him) said: "Do not cut meat with a knife, for that is the practice of the non-Arabs; rather, bite it off the bone, for it is more wholesome and easier to digest."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14626