Institutionum libri
Ex libro XV
Dig. 42,3,9Marcianus libro quinto decimo institutionum. Bonis cedi non tantum in iure, sed etiam extra ius potest. et sufficit et per nuntium vel per epistulam id declarari.
Marcianus, Institutes, Book V. An assignment can not only be made in court, but out of it. It is sufficient for it to be established by means of a messenger or a letter.