In a summary judgment application under Rule 64 of the High Court Rules, 1971, the applicant must verify both the cause of action and the amount claimed through documentary evidence. Where a creditor claims a specific monetary amount and the debtor disputes the correctness of that amount, the applicant must produce documentary proof (such as invoices, statements, or accounting records) that establishes the total debt, payments made, and the outstanding balance. Mere correspondence between parties, without underlying documentation substantiating the precise figure claimed, is insufficient to verify a liquidated amount of money for purposes of summary judgment. Where such documentary verification is absent and could reasonably have been produced by the applicant, summary judgment cannot be granted even if some underlying debt may be owed.