(But watch thou for) their torment, O Muhammad, on (the day when the sky will produce visible smoke) filling what is between the sky and the earth
- 44:1010
فَارْتَقِبْ يَوْمَ تَأْتِي السَّمَاءُ بِدُخَانٍ مُبِينٍ
So watch for the day when the sky begins to emit clear smoke,
- common.revelation-Meccan
- common.hizb : 198