que l'acheteur prenne garde

OBS: Règle de droit romain selon laquelle il appartient à l'acheteur d'examiner l'objet du contrat; c'est pourquoi «le vendeur n'est pas tenu des vices apparents dont l'acheteur a pu lui-même connaître l'existence».

OBS: Let the buyer beware (it is the responsibility of the buyer to see that the article purchased is the one required by him) is still a principle of law, although modified by warranties of fitness...
OBS: Caveat emptor; qui ignorare non debuit quod jus alienum emit (Hob. 99). (A purchaser must be on his guard; for he has no right to remain in ignorance of the fact that what he is buying belongs to someone other than the vendor.) A purchaser who fails to investigate the vendor's title does so at his own risk.