A cow or a donkey or anything that works and eats may be assessed at half profit. [In] a place where they are accustomed to divide the offspring immediately, they divide [them]; [in] a place where they are accustomed to raise [them], they must raise [them]. Rabban Shimon ben Gamliel says: A calf may be assessed with its mother, and a foal with its mother. One may in-crease the rent of his field, and he need not fear that it is interest.

Fixed-value property may not be accepted from a Jew, because it is interest. But fixed-value property may be accepted from gentiles, and we may borrow from them and lend them with interest. And so it is with a resident alien.  A Jew may lend out a gentile’s money with the knowledge of the gentile, but not with the knowledge of a Jew.