To the totality of purposes of the perfect Law there belong the abandonment, depreciation, and restraint of desires in so far as possible.
MaimonidesThe business conduct of the disciples of wise men is truthful and faithful.... He does not allow himself to be made a surety or a guarantor and does not accept the power of attorney.... He lends money and is gracious. He shall not take away business from his fellow man.
Maimonides