فصل في مقتضى الأمر: الأمر بالفعل لا يقتضي التكرار.
A command to perform an act does not, by itself, require repetition.
The rule distinguishes the required kind of action from the number of performances. “Do this” requires an instance of the act. If one valid instance realizes the command's object, the wording alone does not oblige a second, third, or fourth performance.
This does not imply that recurring prayers or fasts could never be obligatory. Recurrence may be established through renewed causes, independent evidence, or a separate instruction.
The crucial distinction is between an imperative's indication of the act itself and additional proof that the act must be repeated.