The oath-belief rule, permitting a witness to be asked whether another witness should be believed on oath, continues as part of the common law of Australia and cannot be abolished by an intermediate appellate court. The rule permits opinion based on personal knowledge, not only general reputation. However, the rule precludes the witness from giving evidence of the particular facts, circumstances or incidents forming the basis of the opinion. Section 23 of the Evidence Act 1929 (SA) does not apply to the oath-belief rule because it addresses only the credibility of the witness being questioned.
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