How must wooden bowls and cups be specified in a sale?
Chapter on Guaranteed Salaf (Advance Payment) for a Specified Term
Al-Mughni
Book of Sales
Primary text
The sale of wooden bowls and cups is permissible, provided that the type of wood is specified, such as walnut or mulberry. Additionally, the sale must detail the vessel's size (small or large), depth, narrowness, thickness, thinness, and the specific nature of the craftsmanship.