Reference for Bava Metzia 145:4
מאי בינייהו איכא בינייהו תגרא חדתא
Wherein do they differ? — In respect of a new trader.<span class="x" onmousemove="('comment',' I.e., if the carrier has only just begun to trade thus. On the first view, that it is permitted because they are satisfied to be known as merchants and receive credit, it is permitted here too, since the same reason operates; (according to Tosaf., being new traders and inexperienced in price fluctuations, they are sufficiently compensated by being informed thereon). But on the second view, being new, they lack the farmer's confidence, who may not believe that they are supplying the produce in the dear place at cheap rates, and hence receive no additional discount. Therefore the transaction is forbidden, for his labour of carriage is merely on account of the money advanced, and thus partakes of the nature of usury. ');"><sup>7</sup></span> In Sura four [se'ahs] went [to the <i>zuz</i>]; in Kafri,<span class="x" onmousemove="('comment',' [South of Sura, Obermeyer, op. cit., p. 316.] ');"><sup>8</sup></span>