[ULPIANUS libro septimo decimo ad edictum. ] §7.2.10.prInterdum pars usus fructus et non habenti partem suam, sed amittenti adcrescit: nam si usus fructus duobus fuerit legatus et alter lite contestata amiserit usum fructum, mox et collegatarius, qui litem contestatus non erat, usum fructum amisit, partem dimidiam dumtaxat, quam amisit qui litem contestatus est aduersus eum qui se liti optulit, a possessore consequitur: pars enim collegatarii ipsi adcrescit, non domino proprietatis: usus fructus enim personae adcrescit et si fuerit amissus.
[ULPIANUS from the seventeenth book on the Edict.] Sometimes a part of a usufruct accrues not to one who holds his own part, but to one who loses it. For if a usufruct has been bequeathed to two persons, and one of them, after joinder of issue, has lost the usufruct, and soon afterwards the co-legatee, who had not joined issue, also lost the usufruct, the one who joined issue recovers from the possessor only the half part which he lost against the one who offered himself to the suit; for the part of the co-legatee accrues to him, not to the owner of the property; for a usufruct accrues to the person, even if it has been lost.