R. Nath (supra), the validity of the bye law has not been considered. As already indicated, though the bye law has no statutory force, it is binding on the candidate concerned. In Sarifuz Zaman (supra), the Supreme Court was concerned with a regulation framed under a statute. The present bye law conditions is not framed under a particular statute nor any material has been produced to come to such a conclusion. Therefore, the said bye law condition can only be treated as a regulation to be followed by the parties who undertake the studies in institutions affiliated to C.B.S.E. and participates in C.B.S.E. Examinations. In such circumstances, C.B.S.E. is entitled to contend that they will not make any corrections after the period specified in the bye laws. C.B.S.E. is apparently not concerned with the correctness of the date of birth with reference to the birth certificate obtained from the local authority. In fact, such a provision has been made by way of an amendment which is reflected in the judgment in Rahul (supra). Therefore, with effect from the date on which such amendments had been made, it is apparent that C.B.S.E. insists for birth certificate from statutory authority, before giving an admission to a candidate in C.B.S.E. schools. That was not the position earlier when the petitioners have studied in those schools. But the fact remains that when a specified time limit has been prescribed by C.B.S.E., all concerned are bound by the same.