 It even goes so far as to forbid the loaning of things other than money since by the time the loan had to be repaid, the market value of the loaned thing could have risen, which effectively constituted interest; likewise, the exchange of labour between two individuals was forbidden by the Mishnah, if the work by one of the individuals would be more laborious than the other.According to the Mishnah, if a debtor has paid interest to his lender, it can be reclaimed if it is a form of interest explicitly prohibited by the biblical regulations but not if it is prohibited only by the Mishnah itself; a dissenting view is, however, expressed by the Mishnah, stating that even the biblically prohibited forms of interest cannot be reclaimed legally.The Mishnaic justification given for the latter view is that the biblical text invokes divine vengeance against usurers, and civil action cannot be launched against someone under the penalty of death; effectively this meant that rabbinical courts made judgements in cases of usury but refused to enforce them by anything other than physical attacks against the lender's body.