Civil Code (Cap. 16), article 211

211. When the demand by the heirs to be vested with the provisional possession of the property, has become competent, e ven though no such demand shall have been made by them, the legatees, donees, and all other persons having rights on the property of the absentee depending on his death, may, by sworn application against th e testamentary heirs o r the heirs-at-law, as the case may be, and the attorney or curator, if any, demand to be allowed to exercise such rights provisionally. Security.212. The heirs, and the persons mentioned in the last preceding article, shall be placed in the provisional possession of the property, or allowed to exercise their eventual rights, only on condition of giving security in an amount to be fixed by the court, in terms of article 352. Other caution in default of security.