Section 26(8)(a) in The Bihar Land Reforms (Fixation of Ceiling Area and Acquisition of Surplus Land) Rules, 1963
(a)When a compensation assessment roll has been finally published under sub-section (5) or sub-section (6) the Collector shall, within a period of 30 clear days from the date on which the roll is declared to have been finally published, endorse a certificate thereon stating the date of final publication thereof and shall date and subscribe the same in Form L.C. 22.