Below is a sample of commercially relative regulations as set forth in the Pentateuch listed by Maimonides in the 613 Commandments.

#524  The courts must carry out the laws of a borrower Ex.  22:13
#525  Lend to the poor and destitute Ex.  22:24
#528  Press the idolater for payment Deut.  15:3
#529  The creditor must not forcibly take collateral Deut.  24:10
#530  Return the collateral to the debtor when needed Deut.  24:13
#531  Not to delay its return when needed Deut.  24:12
#532  Not to demand collateral from a widow Deut.  24:17
#533  Not to demand as collateral utensils needed for preparing food Deut.  24:
#534  Not to lend with interest Lev.  25:37
#535  Not to borrow with interest Deut.  23:20
#536  Not to intermediate in an interest loan, guarantee, witness, or write the promissory note Ex.  22:24
#537  Lend to and borrow from idolaters with interest Deut.  23:21

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