35. Sales in which a Price is paid for Goods to be Delivered Later (As-Salam) - كتاب السلم
2) Chapter: As-Salam for a known specified weight
Narrated Ibn `Abbas:
The Prophet (ﷺ) came (to Medina) and he told the people (regarding the payment of money in advance
that they should pay it) for a known specified measure and a known specified weight and a known
specified period.