Maslahah

Ba'i al-Wafa` first appeared in Central Asia, especially Bukhara and Balkh around the 5th century AH in order to avoid usury in borrowing. Many of the rich when it is not willing to lend money without any remuneration they receive. While many of the borrowers are not able to pay off debts due in return they have to pay along with money borrowed. On the other hand benefits granted on the basis of borrowing money, according to scholars of fiqh including usury. So to avoid usury, the community of Bukhara and Balkh formatting a form of trading known as alWafa` Bai'u.