De inofficioso testamento liber singularis
Dig. 5,2,9Modestinus libro singulari de inofficioso testamento. Si autem intra quinquennium egerit, libertates non competunt. sed Paulus ait praestaturum fidei commissas libertates, scilicet viginti aureis et in hoc casu a singulis praestandis.
Modestinus, On Inofficious Testaments. Where anyone institutes proceedings within five years, manumission will not stand. Paulus says, however, that where freedom is granted under a trust it will be allowed; and, of course, in this instance twenty aurei must be paid by each individual.