The Prophet ﷺ said, "When your servant brings your meals to you then if he does not let him sit and share the meals, then he should at least give him a mouthful or two mouthfuls of that meal or a meal or two meals, as he has prepared it."  

عَنِ النَّبِيِّ ﷺ إِذَا أَتَى أَحَدَكُمْ خَادِمُهُ بِطَعَامِهِ فَإِنْ لَمْ يُجْلِسْهُ مَعَهُ فَلْيُنَاوِلْهُ لُقْمَةً أَوْ لُقْمَتَيْنِ أَوْ أُكْلَةً أَوْ أُكْلَتَيْنِ فَإِنَّهُ وَلِيَ عِلاَجَهُ