Genesis 42:33-35 New International Version (NIV)

33. “Then the man who is lord over the land said to us, ‘This is how I will know whether you are honest men: Leave one of your brothers here with me, and take food for your starving households and go.

34. But bring your youngest brother to me so I will know that you are not spies but honest men. Then I will give your brother back to you, and you can trade in the land.’ ”

35. As they were emptying their sacks, there in each man’s sack was his pouch of silver! When they and their father saw the money pouches, they were frightened.

Genesis 42