Al-Adab Al-Mufrad #201

Abu Mahdhura said, "I was sitting with 'Umar when Safwan ibn Umayya brought him a bowl which some people were carrying in a robe. They set it down in front of 'Umar. 'Umar then invited some poor people and some slaves belonging to the people around him and they ate with him. Then he aid, 'Allah will do a people - or else he said, 'Allah will curse a people' - who dislike having their slaves eat with them.' Safwan said, 'By Allah, we do not dislike them, but we prefer ourselves to them, and by Allah, we do not find good food which we can eat and feed it to them as well.'"