The traveller's concession in fasting illustrates how a meaning drawn from revelation is used in related problems. If a traveller intends a different obligatory fast during Ramadan, the issue includes the legal designation of the day, the concession and the specification of the obligation—not merely the words of intention.
Jurists differ over the result. Some reasoning emphasizes the concession and the other duty; other reasoning emphasizes Ramadan's designated time.
The student's task is to identify the original ruling and the proposed cause before evaluating each conclusion.