[IDEM libro septuagensimo septimo ad edictum. ] §2.8.12.prInter omnes conuenit heredem sub condicione, pendente condicione possidentem hereditatem, substituto cauere debere de hereditate, et, si defecerit condicio, adeuntem hereditatem substitutum et petere hereditatem posse et, si optinuerit, committi stipulationem.
[THE SAME, in the seventy-seventh book on the Edict.] It is agreed among all that an heir appointed under a condition, who is in possession of the inheritance while the condition is pending, must give security regarding the inheritance to the substitute; and if the condition fails, the substitute, on entering upon the inheritance, can both claim the inheritance and, if he prevails, the stipulation is committed.
et plerumque ipse praetor et ante condicionem existentem et ante diem petitionis uenientem ex causa iubere solet stipulationem interponi.
And generally, the praetor himself is accustomed, on cause shown, to order the stipulation to be entered into both before the condition is fulfilled and before the day for the claim arrives.