Deuteronomy 15:13

And when thou lettest him go free from thee, thou shalt not let him go empty:

Genesis 31:42

Except the God of my father, the God of Abraham, and the Fear of Isaac, had been with me, surely now hadst thou sent me away empty. God hath seen mine affliction and the labor of my hands, and rebuked thee yesternight.

Exodus 3:21

And I will give this people favor in the sight of the Egyptians: and it shall come to pass, that, when ye go, ye shall not go empty.

Leviticus 25:42-44

For they are my servants, whom I brought forth out of the land of Egypt: they shall not be sold as bondmen.

Proverbs 3:27-28

Withhold not good from them to whom it is due, When it is in the power of thy hand to do it.

Jeremiah 22:13

Woe unto him that buildeth his house by unrighteousness, and his chambers by injustice; that useth his neighbor's service without wages, and giveth him not his hire;

Malachi 3:5

And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against the false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the sojourner from his right , and fear not me, saith Jehovah of hosts.

Colossians 4:1

Masters, render unto your servants that which is just and equal; knowing that ye also have a Master in heaven.

Treasury of Scripture Knowledge

Summary

And when thou sendest him out free from thee, thou shalt not let him go away empty:

This is a most humane and merciful addition to the law in ex 21

Bible References

This is a most humane and merciful addition to the law in ex 21

Exodus 3:21
And I will give this people favor in the sight of the Egyptians: and it shall come to pass, that, when ye go, ye shall not go empty.
Leviticus 25:42
For they are my servants, whom I brought forth out of the land of Egypt: they shall not be sold as bondmen.
Proverbs 3:27
Withhold not good from them to whom it is due, When it is in the power of thy hand to do it.
Jeremiah 22:13
Woe unto him that buildeth his house by unrighteousness, and his chambers by injustice; that useth his neighbor's service without wages, and giveth him not his hire;
Malachi 3:5
And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against the false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the sojourner from his right , and fear not me, saith Jehovah of hosts.
Colossians 4:1
Masters, render unto your servants that which is just and equal; knowing that ye also have a Master in heaven.

American Standard Version Public Domain