Al-Hijr - 15:44

لَهَا سَبْعَةُ أَبْوَابٍ لِّكُلِّ بَابٍ مِّنْهُمْ جُزْءٌ مَّقْسُومٌ
[15:44]
It has seven gates; for every gate there shall be a separate party of them.
To it are seven gates: for each of those gates is a (special) class (of sinners) assigned.
It hath seven gates, and each gate hath an appointed portion.