Federal Constitution NOTES Art. 21 This Article was repealed by Act 26/1963, section 70, in force from 16-09-1963, but continues to have effect for the purposes of repealed Article 20. It read as follows: “21. (1) A certificate of naturalization shall not be granted to any person until he has taken the oath set out in the First Schedule. (2) A person to whom a certificate of naturalization is granted shall be a citizen by naturalization from the date on which the certificate is so granted.”.