Genesis 44:3-5

As soon as the morning was light, the men were sent away, they and their asses. And when they were gone out of the city, and not yet far off, Joseph said unto his steward, Up, follow after the men; and when thou dost overtake them, say unto them, Wherefore have ye rewarded evil for good? Is not this it in which my lord drinketh, and whereby indeed he divineth? ye have done evil in so doing.