Section 37A(11) in The Bengal Agricultural Debtors Act, 1936
(11)When the debt is extinguished, or when twenty years have expired from the date of the award made under sub-section (5), or when such award ceases to subsist under sub-section (5) of section 29, whichever is earlier, the decree or certificate in execution of which the property was sold shall be deemed to have been fully satisfied.