What is interest and what is increase? What is interest? [If] one lends a sela for five dinars, [or] two se’in of wheat for three, because he “bites.” And what is increase? One who increases through produce. How? [If] he purchased wheat from him at [the rate of] a golden dinar per kor, and that was the market price. [Then] wheat rose to thirty dinars, [and] he said to him: “Give me my wheat, for I wish to sell it and purchase wine for it.” He replied: “Your wheat shall be considered [a debt of] thirty dinars upon me, and you have [a claim of] wine upon me for them”; but he has no wine.