What is the validity of delivery when possession of one partner's share cannot be given without also delivering the share of the co-partner?

Chapter on Selling the Musarrah (Animal with milk retained in udder)

Al-Mughni

Book of Sales

Book 12 · Issue 4 · Bab 5

Open in Qurani

Primary text

Delivery is invalid if the possession of one purchasing partner's share cannot be effected except by also delivering the share of the co-partner, based on the established principle that the absent partner has not authorized such delivery.