The Ways of Ascent - 70:16 It is eager to burn
What kind of fire?
The Cow/2:24 If you cannot do that, and you will never be able to do that, then beware of the Fire prepared for the disbelievers, whose fuel is mankind and stones.

The Family Of Imran/3:10 Neither money nor children of the disbelievers will avail them anything against Allah. They are the fuel of the Fire.

The Jinn/72:14 "Among us are the Muslims and the compromisers."Whoever submits, it is they who seek the truth."
The Jinn/72:15 As for the compromisers, they will be firewood for Hell.

The Prophets/21:97 "The fulfillment of the Word of truth has come near, and the eyes of the disbelievers have been filled with fear: "Woe to us, we were heedless of this, we were indeed the wrongdoers."
The Prophets/21:98 You and those whom you serve besides Allah are the fuel of Hell; you are worthy to enter it.

The Prohibition/66:6 O you who believe, protect yourselves and your families from the Fire whose fuel is people and stones. Above the Fire are angels, stern and strong, and they will not disobey Allah´s command, and they will do what they are commanded.