فَأَرَىٰهُ ٱلْـَٔايَةَ ٱلْكُبْرَىٰ ۝٢٠ فَكَذَّبَ وَعَصَىٰ ۝٢١ What is the grammatical role of ٱلْكُبْرَىٰ?

Surah An-Nazi‘at — Part 3