The appellant was charged with rape under the Criminal Law Amendment Act 105 of 1997, it being alleged that he had sexual intercourse with a 24‑year‑old female complainant described in the charge sheet as mentally retarded. The appellant and complainant were neighbours. A neighbour (T) found them emerging from the complainant’s locked house and, after questioning, the complainant told him that the appellant had intercourse with her. The appellant denied having sexual intercourse or being inside the house. The State led evidence from the complainant, her mother, and a medical practitioner’s report (J88). The complainant was not placed under oath or affirmation; instead, the magistrate admonished her to speak the truth without properly enquiring into her ability to understand the duty to tell the truth or to distinguish between truth and falsehood.