Genesis 42:33-34

Darby(i) 33 And the man, the lord of the land, said to us, Hereby shall I know that ye are honest: leave one of your brethren with me, and take [for] the hunger of your households, and go, 34 and bring your youngest brother to me, and I shall know that ye are not spies, but are honest. Your brother will I give up to you; and ye may trade in the land.