ولا يصح السلم عند أبي حنيفة إلا بسبع شرائط
Translation: According to Abu Hanifa, salam is not valid without seven conditions.
Quduri attributes seven specifications to Abu Hanifa. The worked juristic enumeration is:
1. Genus, e.g. wheat.
2. Variety or type.
3. Quality or grade.
4. Quantity of the future goods, e.g. 500 kg.
5. A known future date.
6. Amount of the advance capital when the exchange is governed by that amount.
7. Delivery location when transport is costly.
Together these seven specifications settle the scope, nature, timing and required delivery place of the obligation. Quantity of the future goods is essential: without it, the buyer's entitlement and the seller's duty remain undefined.