[1] Notwithstanding anything contained elsewhere in this Act, or in any other law, or in any contract [a] decree for arrears of rent due in respect of a tenure or holding, whether having the effect of a rent decree or money decree,or a certificate for such arrears signed under the Bengal Public Demands Recovery Act, 1913, shall not be executed by the attachment and sale of any movable or immovable property other than the entire tenure or holding to which the decree or certificate relates: Provided that the provisions of this clause shall not apply if, in any manner other than by surrender of the tenure or holding, the term of the tenancy expires before an application is made for the execution of such a decree or certificate; [b] The purchaser at a sale referred to in clause (a) shall be liable to pay to the decree holder or certificate holder the deficiency, if any, between the purchase price and the amount due under the decree or certificate together with the costs incurred in bringing the tenure or holding to sale and any rent which may have become payable to the decree holder between the date of the institution of the suit and the date of the confirmation of the sale.