Deuteronomy 15:18

15:18 It shall not seem hard to you, when you let him go free from you; for to the double of the hire of a hireling has he served you six years: and Yahweh your God will bless you in all that you do.
-World English Bible

Other Translation

15:18 It shall not seem hard unto thee, when thou sendest him away free from thee; for he hath been worth a double hired servant [to thee], in serving thee six years: and the LORD thy God shall bless thee in all that thou doest.
-King James Version