In application proceedings involving disputed material facts, particularly in technical matters such as mining boundary disputes, an applicant must lay a proper factual foundation for the relief sought. Where the applicant's version is disputed and the court cannot determine the true factual position from the papers alone, and where technical or expert evidence is necessary to establish the facts, the applicant has a duty to join relevant parties (such as administrative officials with technical expertise) who can assist the court in determining the factual situation. A court cannot grant an interdict based on the applicant's mere say-so where the respondent presents an equally plausible contradictory version and there is no objective evidence to establish which version is correct. The applicant must establish a prima facie right that is being or about to be infringed, and this cannot be done where fundamental factual questions remain unanswered.