﴿ لَهُم مِّن فَوْقِهِمْ ظُلَلٌۭ مِّنَ ٱلنَّارِ وَمِن تَحْتِهِمْ ظُلَلٌۭ ۚ ذَٰلِكَ يُخَوِّفُ ٱللَّهُ بِهِۦ عِبَادَهُۥ ۚ يَٰعِبَادِ فَٱتَّقُونِ ﴾

“Clouds of fire will they have above them, and [similar] clouds beneath them…” In this way does God imbue His servants with fear. O you servants of Mine! Be, then, conscious of Me -”

(They have) i.e. the disbelievers of Mecca (an awning) canopies (of fire above them and beneath them a dais (of fire). With this doth Allah appal His bondmen) in the Qur'an. (O My bondmen) He means Abu Bakr and his fellow believers, (therefore fear Me) therefore obey Me in that which I have commanded you!