The head of a hospital is saying to the hospital’s clients: pay five hundred riyals for twenty medical exams in one year, whether for cases of sickness or for regular check-ups throughout the year. If a person uses all twenty exams, he has got what he paid for, but if he does not use them because he did not come for check-ups or did not get sick, he will not get any of his money back.
We put this question to Shaykh Muhammad ibn Saalih al-‘Uthaymeen, may Allaah preserve him, and he answered as follows:
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Have they agreed on a specific number?
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Yes.
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Then it is OK.
Question:
Even if he does not come for all twenty appointments, whether because he doesn’t get sick or he is lazy and doesn’t come for check-ups, so the five hundred riyals are gone?
Answer:
That means he has forfeited his right.
Question:
Yes, so if he gives up his right, for example, that’s OK?
Answer:
It is OK so long as what he has given up is a known amount. And Allâh knows best.