(1)In cases of confinement the period of maternity leave may extend up to the end of three months from the date of the commencement of leave:Provided that such leave shall not be granted for more than three times during the entire service including temporary service:Provided also that if any female government servant has two or more living children, she shall not be granted maternity leave even though such leave may otherwise be admissible to her. If, however, either of the two living children of the female government servant is suffering from incurable disease or is disabled or crippled since birth or contracts some incurable disease or becomes disabled or crippled later, she may, as an exception, be granted maternity leave till one more child is born to her subject to the overall restriction that maternity leave shall not be granted for more than three times during the entire service.Provided further that no such leave shall be admissible until a period of at least two years has elapsed from the date of expiry of the last maternity leave granted under this rule.