'There are twelve distinctive features to brushing one's teeth: it is a recommended prophetic practice, it purifies one's mouth, brightens one's eyesight, pleases the Beneficent Lord, whitens the teeth, does away with wretchedness, strengthens one's gums, whets one's appetite for food, takes away phlegm, improves one's memory, multiplies one's rewards for good deeds, and gives pleasure to the angels.'