He—may Allah have mercy on him—was asked:

Someone purchased something from the public treasury on behalf of an orphan, on terms advantageous to the treasury, but with no apparent advantage to the orphan. Is the purchase valid? Is the appointed guardian liable for the excess paid?

He replied:

If he purchased it for the orphan at the prevailing market price, or at a higher price in the orphan’s interests, that is permissible. But if he paid an excess beyond the customary margin of price variation, he is liable for the excessive amount paid. The advantage to the public treasury has no bearing on the ruling, for this is an outward form with no underlying reality. And Allah knows best.

He was asked:

A man imprisoned in the ruler’s jail feared for his life and was being pressed to repay a debt due under Islamic law. While imprisoned, he had witnesses attest to his acknowledgment that all the real estate he owned belonged to his wife, and she confirmed his statement. Is this acknowledgment valid and effective with respect to all his property, or does it apply only to one-third, with the remaining two-thirds subject to the heirs’ approval, or not? And if he has a young daughter