I heard from my Rebbe as follows: A wealthy Ba’al Tzedakah once came to Rebbe Dov Ber, the Maggid of Mezeritch [the premier disciple of the Ba’al Shem Tov, and previously of the P’nei Yehoshua, circa 1700 – 1772.] He excitedly told the Tzaddik how he took upon himself a program of ‘prishus’ and [during the weekdays presumably] only ate dry bread and drank plain water etc. To which the Maggid replied: “No, no, that’s not for you at all! If you eat dry bread, you will expect the poor people to eat rocks… If you drink water, you will expect the poor to drink mud… Eat well, drink well, dress well, and help others well…”