Civil Code (Cap. 16), article 939

939. (1) The co-heirs shall contribute among themselves to the payment of the debts of the inheritance in such proportion and manner as shall have been established by the testator. (2) Where the deceased has not made a will or has not given any directions as to the apportionment of the debts, the co-heirs shall contribute to the payment of such debts in proportion to their respective share in the inheritance. Each heir is bound ratably with respect to creditors.