“Abdullah Ibn Dinar relates, "Once I was walking with the Caliph Omar near Mecca when we met a shepherd's slave-boy driving his flock. Omar said to him, "Sell me a sheep." The boy answered, "They are not mine, but my master's." Then, to try him, Omar said, "Well, you can tell him that a wolf carried one off, and he will know nothing about it." "No, he won't," said the boy, "but God will." Omar then wept, and, sending for the boy's master, purchased him and set him free, exclaiming, "For this saying thou art free in this world and shalt be free in the next." There”