30 And if a ransom should be imposed on him, he shall pay for the ransom of his soul as much as they shall lay upon him.
Exodus 21:30 Cross References - CAB
Exodus 21:22
22 And if two men strive and strike a woman with child, and her child be born imperfectly formed, he shall be forced to pay a penalty: as the woman's husband may lay upon him, he shall pay with a valuation.
Exodus 30:12
12 When you take a census of the children of Israel for their number, then every man shall give a ransom for his soul to the Lord, then there shall not be among them a destruction in the visiting of them.
Numbers 35:31-33
31 And you shall not accept ransoms for life from a murderer who is worthy of death, for he shall be surely put to death.
32 You shall not accept a ransom to excuse his fleeing to the city of refuge, so that he should again dwell in the land, until the death of the high priest.
33 So shall you not pollute with murder the land in which you dwell; for this blood pollutes the land, and the land shall not be purged from the blood shed upon it, but by the blood of him that shed it.
Proverbs 13:8
8 A man's own wealth is the ransom of his life, but the poor does not endure threatening.