Abu Hurayrah (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "When someone's servant brings him his food, let him seat him with himself. If he does not seat him with himself, let him at least give him a morsel or two, for he has endured the heat and smoke while cooking the food."
This hadith is evidence for the statement of Imam al-Shafi'i (may Allah have mercy on him) made at the end of the previous hadith.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النفقات / 15780