[GAIUS libro septimo ad edictum prouinciale. ] §7.5.7.prSi uini olei frumenti usus fructus legatus erit, proprietas ad legatarium transferri debet et ab eo cautio desideranda est, ut, quandoque is mortuus aut capite deminutus sit, eiusdem qualitatis res restituatur, aut aestimatis rebus certae pecuniae nomine cauendum est, quod et commodius est.
[GAIUS in the seventh book on the Provincial Edict.] If the usufruct of wine, oil, or wheat is bequeathed, the ownership must be transferred to the legatee, and security must be demanded from him so that, whenever he dies or suffers a change of status, property of the same quality shall be restored, or, after the property has been appraised, security must be given under the name of a fixed sum of money, which is also more convenient.
idem scilicet de ceteris quoque rebus, quae usu continentur, intellegemus.
We shall, of course, understand the same to apply to all other things which are consumed by use.