[ULPIANUS libro primo institutionum. ] §43.26.1.prPrecarium est, quod precibus petenti utendum conceditur tamdiu, quamdiu is qui concessit patitur.
[ULPIAN, Institutes, book one.] A precarium is that which is granted for use to one who asks for it by entreaty, for so long as he who granted it permits.
§43.26.1.1Quod genus liberalitatis ex iure gentium descendit.
This kind of liberality derives from the law of nations.
§43.26.1.2Et distat a donatione eo, quod qui donat, sic dat, ne recipiat, at qui precario concedit, sic dat quasi tunc recepturus, cum sibi libuerit precarium soluere.
And it differs from a donation in this respect, that he who donates gives in such a way as not to receive it back, whereas he who grants by precarium gives as if he were to receive it back at the very moment when it pleases him to dissolve the precarium.
§43.26.1.3Et est simile commodato: nam et qui commodat rem, sic commodat, ut non faciat rem accipientis, sed ut ei uti re commodata permittat.
And it is similar to a loan for use; for he too who lends a thing lends it in such a way as not to make the thing the property of the recipient, but to permit him to use the thing lent.