<b>Guidance from the Hadiths:</b><br> 1) Part of the wisdom behind the prohibition of a town-dweller selling for a desert-dweller is that the town-dweller should not deceive the desert-dweller, for the latter does not know the prices in the market.<br> 2) Islam guarantees the ignorant and unaware their right during sale transactions, thus destroying the unjust common rule that says: “Law does not protect fools.”<br> 3) Blood relationship does not make the unlawful lawful. So, a believer should be keen to establish the Shariah of Allah, even if this contradicts the kinship interests.