Is a contract valid if an agent purchases two slaves intended for two distinct principals (co-owners) using a single unified acceptance ('qabul')?

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If an agent purchases two slaves belonging to two co-owners, where the offer originates from their agent or one co-owner with the permission of the other, the transaction is valid if the purchase is executed via separate offers culminating in a single acceptance by the agent. However, if each co-owner possesses a separate, distinct slave, and the agent receives the offer from both owners by accepting both sales with a single verbal declaration ('qabiltu'), the القاضي (the Judge) rules that the contract is not binding upon the principal. This view aligns with the position of Al-Shafi'i because a single acceptance against two distinct offers constitutes two separate contracts.