What are the permissible descriptions for raw wool in a contract of forward sale?
Chapter on Guaranteed Salaf (Advance Payment) for a Specified Term
Al-Mughni
Book of Sales
Primary text
Raw wool must be described by its region (balad), color (lawn), length (ṭūl), shortness (qisar), and the season of shearing, being either autumn (kharīfī) or spring (rabi'ī), as autumn wool is cleaner.
Supporting text
The Qadi permits describing it by gender (male or female) because female wool is softer. However, there is an opinion suggesting this level of specification is unnecessary because the variation in softness is minor.