(1) Upon the execution of any contract for the disposal of a unit the grantee shall be jointly and severally liable with the grantor for all unpaid contributions due by the latter to the body corporate up to the date of the contract without prejudice to the grantee's right to recover from the grantor any amounts paid by the grantee therefor.
(2) For the purposes of this section the body corporate shall on the application of any unit owner or any person authorised in writing by him or her certify—
(a) the amount of any contribution which on the date of such certificate is due and payable by such unit owner;
(b) the time within which such contribution is payable;
(c) the extent (if any) to which any such contribution has been paid by the unit owner,
and any such certificate is conclusive in favour of such person.