Julianus, Digest, Book XXVIII. If my slave was appointed an heir, and I fraudulently prevented the testator from changing his will, and I afterwards manumitted the slave, the question arises whether actions to recover the estate should be refused to him. I answered, that this case is not included in the terms of the Edict; it is, however, but just, if the master was guilty of fraud, to prevent the will by which a slave was appointed heir from being changed; and he, even though he was manumitted, should accept the estate, the actions should be denied him, as an action is denied an emancipated son, where his father has committed fraud in order to prevent the testator from changing his will.

Julianus, Digest, Book XXVIII. If you have been substituted for your co-heir, and you obtain possession of an estate, and your co-heir determines not to demand possession of the same, the entire possession will be understood to be given to you, and your co-heir will not even have the power of afterwards claiming possession. 1A son is entitled to the term of one year in which to demand possession, not only where he does so as a son, but where he demands it as an agnate, or a cognate; just as where a father manumits his son, and although he may demand possession of the estate, as having been manumitted, still, he will be entitled to a term of a year in which to do so.