[PAPINIANUS libro nono responsorum. ] §22.3.3.prCum tacitum fideicommissum ab eo datur, qui tam in primo quam in secundo testamento pro eadem parte uel postea pro maiore heres scribitur, probatio mutatae uoluntatis ei debet incumbere qui conuenitur, cum secreti suscepti ratio plerumque dominis rerum persuadeat eos ita heredes scribere, quorum fidem elegerunt.
[PAPINIANUS, in the ninth book of Responses.] When a tacit fideicommissum is given by one who is written down as heir for the same share both in the first and in the second testament, or afterwards for a larger share, the proof of a change of intention ought to lie upon him who is sued; since the nature of the secret undertaken generally persuades the owners of property to write down as heirs in this manner those whose trust they have chosen.