What specifications are required when contracting for gypsum (Juss) and slaked lime (Nuwara)?
Chapter on Guaranteed Salaf (Advance Payment) for a Specified Term
Al-Mughni
Book of Sales
Primary text
If the contract is for gypsum or slaked lime, their color and weight must be specified.
Supporting text
Material that has been touched by water and subsequently dried is not accepted, nor is material that has aged to an extent that affects its quality.