﴿ يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ قُوٓا۟ أَنفُسَكُمْ وَأَهْلِيكُمْ نَارًۭا وَقُودُهَا ٱلنَّاسُ وَٱلْحِجَارَةُ عَلَيْهَا مَلَٰٓئِكَةٌ غِلَاظٌۭ شِدَادٌۭ لَّا يَعْصُونَ ٱللَّهَ مَآ أَمَرَهُمْ وَيَفْعَلُونَ مَا يُؤْمَرُونَ ﴾

“O YOU who have attained to faith! Ward off from yourselves and those who are close to you that fire [of the hereafter] whose fuel is human beings and stones: [lording] over it are angelic powers awesome [and] severe, who do not disobey God in whatever He has commanded them, but [always] do what they are bidden to do.”

Please check ayah 66:8 for complete tafsir.