2:23
وَإِن كُنتُمْ فِي رَيْبٍ مِّمَّا نَزَّلْنَا عَلَى عَبْدِنَا فَأْتُواْ بِسُورَةٍ مِّن مِّثْلِهِ وَادْعُواْ شُهَدَاءكُم مِّن دُونِ اللّهِ إِنْ كُنْتُمْ صَادِقِينَ
And if ye are in doubt as to what We have revealed from time to time to Our servant, then produce a Sura like thereunto; and call your witnesses or helpers (If there are any) besides Allah, if your (doubts) are true.
2:24
فَإِن لَّمْ تَفْعَلُواْ وَلَن تَفْعَلُواْ فَاتَّقُواْ النَّارَ الَّتِي وَقُودُهَا النَّاسُ وَالْحِجَارَةُ أُعِدَّتْ لِلْكَافِرِينَ
But if ye cannot- and of a surety ye cannot- then fear the Fire whose fuel is men and stones,- which is prepared for those who reject Faith.
3:10
إِنَّ الَّذِينَ كَفَرُواْ لَن تُغْنِيَ عَنْهُمْ أَمْوَالُهُمْ وَلاَ أَوْلاَدُهُم مِّنَ اللّهِ شَيْئاً وَأُولَـئِكَ هُمْ وَقُودُ النَّارِ
Those who reject Faith,- neither their possessions nor their (numerous) progeny will avail them aught against Allah: They are themselves but fuel for the Fire.
21:98
إِنَّكُمْ وَمَا تَعْبُدُونَ مِن دُونِ اللَّهِ حَصَبُ جَهَنَّمَ أَنتُمْ لَهَا وَارِدُونَ
Verily ye, (unbelievers), and the (false) gods that ye worship besides Allah, are (but) fuel for Hell! to it will ye (surely) come!
66:6
يَا أَيُّهَا الَّذِينَ آمَنُوا قُوا أَنفُسَكُمْ وَأَهْلِيكُمْ نَاراً وَقُودُهَا النَّاسُ وَالْحِجَارَةُ عَلَيْهَا مَلَائِكَةٌ غِلَاظٌ شِدَادٌ لَا يَعْصُونَ اللَّهَ مَا أَمَرَهُمْ وَيَفْعَلُونَ مَا يُؤْمَرُونَ
O ye who believe! save yourselves and your families from a Fire whose fuel is Men and Stones, over which are (appointed) angels stern (and) severe, who flinch not (from executing) the Commands they receive from Allah, but do (precisely) what they are commanded.