Imam al-Shafi'i (may Allah have mercy on him) said: "It has reached us that the Messenger of Allah (peace and blessings be upon him) said: 'If a foreleg (of a goat) were given to me as a gift, I would certainly accept it, and if I were invited to (a meal of) a trotter (of a goat), I would certainly accept.'"
Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "By the One in whose hand is my soul! If I were invited to eat a trotter, I would accept, and if a foreleg or shoulder were given to me as a gift, I would accept." But Waki' did not mention the words "By the One in whose hand is my soul".
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14592