There was a physician who had become wealthy and prosperous thanks to her medical skills. She decided to apprentice her son to study with Jami, the great Sufi teacher and poet.
Jami then assigned the physician's son to clean latrines.
The mother was upset when the boy told her about this, and she sent twelve of her household servants to go clean the latrines instead.
Jami sent the servants back to her, with this message: "If your son had a disease of the gallbladder, would you give the medicine to your servants, or would you give the medicine to him?"
Inspired by: Sacred Laughter of the Sufis by Imam Jamal Rahman
Notes: This story is on p. 19 of the book. For more about Jami, see Wikipedia.