Masculine forms

Relative Nouns — Ṣilah, ʿĀʾid, Forms and Syntax

وَ«الَّذِي» لِلْمُذَكَّرِ، وَ«اللَّذَانِ وَاللَّذَيْنِ» لِلْمُثَنَّى.
Translation: «الَّذِي» is for masculine singular, while «اللَّذَانِ» and «اللَّذَيْنِ» are masculine dual forms.

«الَّذِي» is masculine singular; «اللَّذَانِ» is nominative dual; «اللَّذَيْنِ» is accusative/genitive dual.

These dual forms show case variation; most other relative pronouns remain indeclinable.