Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates from the Messenger of Allah (peace and blessings be upon him): "When someone's slave prepares food for him and brings it, let him seat that slave with himself, for he has endured its heat and smoke. If the food is little, let him at least give him a morsel or two."
Imam Muslim (may Allah have mercy on him) recorded it in his Sahih from Abdullah bin Maslamah al-Qa'nabi.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النفقات / 15781
It is reported from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When a slave prepares food for his master, the master should have him eat with him; if he does not eat, let him at least set aside a morsel or two for him."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النفقات / 15782