[PAULUS libro trigesimo quarto ad edictum. ] §19.2.20.prSicut emptio ita et locatio sub condicione fieri potest: §19.2.20.1sed donationis causa contrahi non potest.
[PAULUS, On the Edict, book 34] Just as a sale, so also a lease can be made under a condition; but it cannot be contracted for the purpose of a donation.
§19.2.20.2Interdum locator non obligatur, conductor obligatur, ueluti cum emptor fundum conducit, donec pretium ei soluat.
Sometimes the lessor is not obligated, while the lessee is obligated; for example, when a buyer leases a farm until he pays the price to him.