Al-Adab Al-Mufrad, Book 9, Hadith 198 (English) ⓘ

Ibn Jurayj related that Abu'z-Zubayr heard him ask Jabir about when a man's servant has finished his work and heat (i.e. cooking). Did the Prophet, may Allah bless him and grant him peace, command that the servant be invited to eat? "Yes," he replied. If one of you dislikes to have his servant eat with him, he should give him his food by his own hand.'"

حَدَّثَنَا مُحَمَّدُ بْنُ سَلاَمٍ، قَالَ‏:‏ أَخْبَرَنَا مَخْلَدُ بْنُ زَيْدٍ، قَالَ‏:‏ أَخْبَرَنَا ابْنُ جُرَيْجٍ قَالَ‏:‏ أَخْبَرَنِي أَبُو الزُّبَيْرِ، أَنَّهُ سَمِعَ رَجُلاً يَسْأَلُ جَابِرًا عَنْ خَادِمِ الرَّجُلِ، إِذَا كَفَاهُ الْمَشَقَّةَ وَالْحَرَّ، أَمَرَ النَّبِيُّ صلى الله عليه وسلم أَنْ يَدْعُوهُ‏؟‏ قَالَ‏:‏ نَعَمْ، فَإِنْ كَرِهَ أَحَدُكُمْ أَنْ يَطْعَمَ مَعَهُ فَلْيُطْعِمْهُ أُكْلَةً فِي يَدِهِ‏.‏