Jerome
Catena Aurea · Matthäusevangelium 10
He that receiveth you receiveth me, and he that receiveth me receiveth him that sent me. He that receiveth a prophet in the name of a prophet shall receive a prophet’s reward; and he that receiveth a righteous man in the name of a righteous man shall receive a righteous man’s reward. And whosoever shall give to drink unto one of these little ones a cup of cold water only in the name of a disciple, verily I say unto you, he shall in no wise lose his reward.
That none should say, I am poor and therefore cannot be hospitable, He takes away even this plea by the instance of a cup of cold water, given with good will. He says cold water, because in hot, poverty and lack of fuel might be pleaded. And whosoever shall give to drink to one of the least of these a cup of cold water only in the name of a disciple, verily I say unto you, he shall not lose his reward.