Section 21U(1) in The Bihar Co-operative Societies Rules, 1959
(1)The counting of votes will take place immediately after the close of the poll and in case it is not possible to count votes immediately after the close of the poll, the ballot boxes shall be sealed by the Election Officer and kept in the safe custody. The candidate or his agent, if he so desires, may also affix his seal. In that case the counting of votes shall take place on the day and the place and hour appointed by the Election Officer in that behalf.