(Al-Mudasir) 74 : 31
وَمَا جَعَلْنَا أَصْحَابَ النَّارِ إِلَّا مَلَائِكَةً ۙ وَمَا جَعَلْنَا عِدَّتَهُمْ إِلَّا فِتْنَةً لِلَّذِينَ كَفَرُوا لِيَسْتَيْقِنَ الَّذِينَ أُوتُوا الْكِتَابَ وَيَزْدَادَ الَّذِينَ آمَنُوا إِيمَانًا ۙ وَلَا يَرْتَابَ الَّذِينَ أُوتُوا الْكِتَابَ وَالْمُؤْمِنُونَ ۙ وَلِيَقُولَ الَّذِينَ فِي قُلُوبِهِمْ مَرَضٌ وَالْكَافِرُونَ مَاذَا أَرَادَ اللَّهُ بِهَٰذَا مَثَلًا ۚ كَذَٰلِكَ يُضِلُّ اللَّهُ مَنْ يَشَاءُ وَيَهْدِي مَنْ يَشَاءُ ۚ وَمَا يَعْلَمُ جُنُودَ رَبِّكَ إِلَّا هُوَ ۚ وَمَا هِيَ إِلَّا ذِكْرَىٰ لِلْبَشَرِ

And We haven’t made the guards of fire except Angels, and We haven’t made their number except as a trial for those who disbelieved, to get confirmed for those who have been given the Book, and to increase belief for the believers, and for not to have any doubt for those who have been given Book and for the believers, whereas for saying those who have disease in their hearts and the disbelievers that “what does Allah intend with this example”; just like that Allah makes stray the one whom He intends, and He guides the one whom He intends; none does know about the armies of your Lord except He, It is nothing except a Reminder for the human being.

Actually “As’habi nnar” mentioned in the verse means the inmates of fire. But since it is about the Angels who don’t disobey Allah in anything as told in verses 16: 49-50 and 66: 6, here it means “the guards of fire”. “Those who have been given the Book” mentioned in this verse are the people of 312 Messengers from Noah to Jesus who have been given the Book Adhikr previously as explained in verses 16: 43-44. “The believers” mentioned in the verse includes the fore-runners who will go to the Paradise even without trial, and the companions of the right hand who will enter in the Paradise after trial as explained in verse 35: 32. The Hypocrites who hide Adhikr are mentioned as disbelievers, and their followers are mentioned as “those who have disease in their hearts”. About these Fujjar it is generally mentioned in verses such as 1: 7; 2: 39; 5: 10; 48: 6; 57: 19 and 64: 10 as “inmates of fire”.
The believers who utilize Adhikr-the Confirming Truth mentioned in verse 69: 51-as the Balance, Criterion, Proof, Light, Insight, Shield and Safeguard can only identify who are the believers and who are the disbelievers. For them have only confirmed belief about the fire, the guards of fire, their number, who will be the inmates of it, etc. For them have also the confirmed belief about the Paradise and who will be the inmates of the Paradise. Those who conceive the message of 6236 verses of Adhikr can only form belief with Allah, His Angels, His Messengers, Day of Judgement, Paradise, Fire, etc. as explained in verses 2: 146and 4: 136. The Nine Hundred and Ninety Nine out of each thousand among those who inherited Lord’s Book will become losers of life and fuel of fire by doing deeds such as prayer, fasting, Hajj, Umra, etc. bodily without participating Soul and without increasing the belief by utilizing Dhikra-Adhikr. If it is told in this verse that this is a Dhikra-Reminder-for the human beings, in verses 89: 23-24 it is warned that on the Day the Hell will be brought, the human beings who didn’t utilize Adhikr from this world after receiving It will wail as “if I had utilized Dhikra-Adhikr”. See explanation 2: 26-27; 72-73; 22: 53 and 45: 32.