Aṭ-ṭālibayni is accusative ism inna marked by yāʾ. Al-mujtahidayni is its accusative dual definite adjective, agreeing in number, definiteness and case.
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Case 1: Dual Ism Inna and Adjective
Advanced Parsing Workshop: Integrated Grammar
Aṭ-ṭālibayni is accusative ism inna marked by yāʾ. Al-mujtahidayni is its accusative dual definite adjective, agreeing in number, definiteness and case.