Deuteronomy 23:15 in the World English Bible
You shall not deliver to his master a servant who has escaped from his master to you.
Context
14 For the LORD thy God walketh in the midst of thy camp, to deliver thee, and to give up thine enemies before thee; therefore shall thy camp be holy: that he see no unclean thing in thee, and turn away from thee.
15 Thou shalt not deliver unto his master the servant which is escaped from his master unto thee:
16 He shall dwell with thee, even among you, in that place which he shall choose in one of thy gates, where it liketh him best: thou shalt not oppress him.