[MODESTINUS libro sexto differentiarum. ] §41.7.3.prAn pars pro derelicto haberi possit, quaeri solet.
[MODESTINUS, from his sixth book of Differences.] It is often asked whether a part can be regarded as abandoned.
et quidem si in re communi socius partem suam reliquerit, eius esse desinit, ut hoc sit in parte, quod in toto: atquin totius rei dominus efficere non potest, ut partem retineat, partem pro derelicto habeat.
And indeed, if a co-owner abandons his share in a common property, it ceases to be his, so that what holds for the whole holds also for a part; but the owner of an entire thing cannot bring it about that he retains a part and abandons another part.