Genesis 47:24-26 Douay-Rheims 1899 American Edition (DRA)
24 That you may have corn. The fifth part you shall give to the king: the other four you shall have for seed, and for food for your families and children.
25 And they answered: Our life is in thy hand: only let my lord look favourably upon us, and we will gladly serve the king.
26 From that time unto this day, in the whole land of Egypt, the fifth part is paid to the king, and it is become as a law, except the land of the priests, which was free from this covenant.