Fuel

And if you are in doubt about what We have sent down [i.e., the Qur’ān] upon Our Servant [i.e., Prophet Muḥammad (ﷺ)], then produce a sūrah the like thereof and call upon your witnesses [i.e., supporters] other than Allāh, if you should be truthful.

But if you do not - and you will never be able to - then fear the Fire, whose fuel is people and stones, prepared for the disbelievers.

Indeed, those who disbelieve - never will their wealth or their children avail them against Allāh at all. And it is they who are fuel for the Fire.

Indeed, you [disbelievers] and what you worship other than Allāh are the firewood of Hell. You will be coming to [enter] it.

O you who have believed, protect yourselves and your families from a Fire whose fuel is people and stones, over which are [appointed] angels, harsh and severe; they do not disobey Allāh in what He commands them but do what they are commanded.