A chassid once said: Whenever I find myself judging others by my own standards, I am reminded of my grandmother's cow.

Every week at the conclusion of the Shabbat, the family cow tethered in my grandmother's yard received a special treat: the pan of water in which the Shabbat pots and dishes had been rinsed. With traces of my grandmother's gefilte fish, cholent, kugel and other Shabbat delights, this was no ordinary pan of dishwater, and was eagerly awaited each week by our cow.

One week, it happened that my grandmother forgot about the cow and spilled out the dishwater. The cow received a pan of ordinary water from the well.

"What a selfish woman my mistress is," thought the cow, "drinking that delicious after-Shabbat water herself!"