One
who rents out his property may increase the rent for payment that is
delayed, but one who sells something may not increase the purchase
price for payment that is delayed.
For
example, if one rented a house to someone and said, “If you pay me for
the year in advance - 10 sela, but if you pay every month, 1 sela a
month” - the rent is the true price, and the discount is given for
paying early. However, if he sold a field, the money is owed right
away, and paying more later is a reward for waiting for money, which is
prohibited.
