What is the ruling on selling measured metallic or wooden vessels?
Chapter on Guaranteed Salaf (Advance Payment) for a Specified Term
Al-Mughni
Book of Sales
Primary text
If the items being sold are vessels whose dimensions—capacity, length, thickness, and circumference—can be precisely determined, such as upright buckets or basins, the sale is permissible. The contract must specify all the details mentioned for the metal types above.