Bede

For taking the spiritual words of the Prophets in a carnal sense, they observed, by washing the body alone, commandments which concerned the chastening of the heart and deeds, saying Wash you, make you clean; (Isa. 1:16) and again, Be ye clean that bear the vessels of the Lord. (Isa. 52:11) It is therefore a superstitious human tradition, that men who are clean already, should wash oftener because they eat bread, and that they should not eat on leaving the market, without washing. …

Catena Aurea by Aquinas ↗