Deuteronomy 24:6

24:6 One must not take either lower or upper millstones as security on a loan, for that is like taking a life itself as security.

Deuteronomy 32:37

32:37 He will say, “Where are their gods,

the rock in whom they sought security,


sn Taking millstones as security on a loan would amount to taking the owner’s own life in pledge, since the millstones were the owner’s means of earning a living and supporting his family.