(1) The persons who accede to the lease under section 563 or with whom it is continued under section 563a are liable together with the heir as joint and several debtors for obligations incurred up to the death of the lessee. Unless otherwise provided, the heir has sole liability in relation to these persons.
(2) If the lessee paid rent in advance for a period of time subsequent to their death, the persons who accede to the lease under section 563 or with whom it is continued under section 563a are obliged to surrender to the heir the sum that they save or gain due to such advance payment.
(3) The lessor may, if the deceased lessee did not provide any security, demand provision of security under section 551 from persons who accede to the lease under section 563 or with whom it is continued under section 563a.