Deuteronomy 15:16

It shall come about if he says to you, ‘I will not go out from you,’ because he loves you and your household, since he fares well with you;

But if the slave plainly says, ‘I love my master, my wife and my children; I will not go out as a free man,’

Sacrifice and meal offering You have not desired;
My ears You have opened;
Burnt offering and sin offering You have not required.

I delight to do Your will, O my God;
Your Law is within my heart.”

Treasury of Scripture Knowledge

And it shall be, if he say unto thee, I will not go away from thee; because he loveth thee and thine house, because he is well with thee;

But if the slave plainly says, ‘I love my master, my wife and my children; I will not go out as a free man,’

Sacrifice and meal offering You have not desired;

My ears You have opened;
Burnt offering and sin offering You have not required.