Section 141 - Exceptions need not be proved by prosecution.

Any exception, exemption, provision, excuse, qualification, whether it does or does not accompany in the same section the description of the offence in the legislation creating the offence, may be proved by the defendant, provided that the prosecution is not required to specify or refute any of the exceptions mentioned in this section and if specified or denied, no proof in relation of the matter so specified or denied shall be required on the part of the prosecution.