Wheat × own flour/sawiq: required volumetric equivalence is not demonstrable; the direct barter is barred.
Meat × live animal: Abu Hanifa and Abu Yusuf allow it; Muhammad imposes an additional condition.
Fresh × dried dates / grapes × raisins: Abu Hanifa permits like-for-like exchange; the two disciples and the majority disagree.
Olives × oil / sesame × oil: embedded oil must be known and outside oil must exceed it; the excess corresponds to residue.
Different meat/milk types: unequal quantities may be possible, while deferment requires a separate check.
The remaining text of Bab al-Riba is complete. Bab al-Salam follows, concerning advance payment for specified goods delivered later.