Mukhtasar Sahih Bukhari — Hadith 1148

Narrated by Sayyiduna Abu Huraira (may Allah be pleased with him) from the Noble Prophet (peace and blessings of Allah be upon him) that he said: "When the servant of any one of you brings food to him, if he does not seat the servant with him, then he should certainly give him a morsel or two, or a bite or two, because he has worked hard to prepare it."