Not physical washing, not spiritual washing, but the covering of evil with a thin, watery, white wash of historical revisionism. Islamic historical revisionism is the worst kind of religious whitewashing. As Jesus said, “Woe to you, scribes, pharisees, hypocrites! For you cleanse the outside of the cup and dish, but inside they are full of extortion and self-indulgence. Blind pharisee, first cleanse the inside of the cup and dish, that the outside of them may be clean also. For you are like whitewashed tombs which indeed appear beautiful outwardly, but inside are full of dead men’s bones and all uncleanness. Even so you also outwardly appear righteous to men, but inside you are full of hypocrisy and lawlessnes. The Bible: Matthew 23:25-28