Vous avez cherché: ceveat emptor (Latin - Anglais)

emptor
emptor, emptoris buyer, purchaser;

carpe emptor
seize the buyer;

malum est malum est dicit omnis emptor et cum recesserit tunc gloriabitu
it is naught, it is naught, saith the buyer: but when he is gone his way, then he boasteth.

si non redemerit et anni circulus fuerit evolutus emptor possidebit eam et posteri eius in perpetuum et redimi non poterit etiam in iobele
and if it be not redeemed within the space of a full year, then the house that is in the walled city shall be established for ever to him that bought it throughout his generations: it shall not go out in the jubile.

quod si non invenerit manus eius ut reddat pretium habebit emptor quod emerat usque ad annum iobeleum in ipso enim omnis venditio redit ad dominum et ad possessorem pristinu
but if he be not able to restore it to him, then that which is sold shall remain in the hand of him that hath bought it until the year of jubile: and in the jubile it shall go out, and he shall return unto his possession.