Section 15(3)(b) in The Punjab Ayurvedic and Unani Practitioners Act, 1963
(b)who proves to the satisfaction of the Registrar within a period of [eighteen months] [Substituted for the words 'one year' by Punjab Act 15 of 1965, section 3.] from the commencement of this Act that the was in practice as a practitioner on the first day of August, 1963.