وَبَنَيْنَا فَوْقَكُمْ سَبْعًا شِدَادًا Qur’an An-Naba (78:12)Wabanayna fawqakum sabAAan shidadan
Lit., "seven firm ones", indicating the multiplicity of cosmic systems (see surah {2}, note [20]).
See n. 5526 to lxv. 12 and n. 2876 to xxiii. 17, also xxxvii. 6 and notes there.