Explanation:

Order 21 Rule 85 – 
ORDER XXI Execution of Decrees and Orders Payment under Decree
85. Time for payment in full of purchase money.—The full amount of purchase-money payable shall be paid by the purchaser into Court before the Court closes on the fifteenth day from the sale of the property: Provided that, in calculating the amount to be so paid into Court, the purchaser shall have the advantage of any set-off to which he may be entitled under rule 72.