Musnad Ishaq

Benefits:
From the mentioned hadith, it is understood that the intensity of the Fire of Hell is seventy times greater than the fire of this world. Hafiz Ibn Hajar rahimahullah says: In the narration of Musnad Ahmad, the words (مِنْ مِّاءَةِ جُزْءٍ) are present, meaning the fire of this world is one part out of a hundred parts of the Fire of Hell. Apparently, there seems to be a contradiction between these two narrations, because in one narration the word seventy is mentioned, while in the other, one hundred. The reconciliation between these ahadith and other similar ahadith in which different numbers are transmitted is that here the purpose is to describe the extreme intensity of the heat of the Fire of Hell, not to specify a particular number. (Fath al-Bari: 6/334)

Because in the Arabic language, the number seventy is used to indicate abundance. As is mentioned in the Noble Qur’an:
﴿اِسْتَغْفِرْلَهُمْ اَوْ لَا تَسْتَغْفِرْلَهُمْ اِنْ تَسْتَغْفِرْلَهُمْ سَبْعِیْنَ مَرَّةً فَلَنْ یَّغْفِرَ اللّٰهُ لَهُمْ﴾ ()
Allah Ta’ala informed the Noble Prophet sallallahu alayhi wa sallam that the hypocrites are not worthy of Allah’s forgiveness, therefore, whether you seek forgiveness for them or do not seek forgiveness for them, it is the same. And the intent behind the number seventy is exaggeration. It does not mean that if the Noble Prophet sallallahu alayhi wa sallam seeks forgiveness more than seventy times, Allah will forgive the hypocrites. Similarly, in the mentioned hadith here, the purpose is also to describe the intensity, heat, and severity of the Fire of Hell. The statement of Allah Ta’ala is: ﴿قُلْ نَارُ جَهَنَّمَ اَشَدُّ حَرًّا لَوْ کَانُوْا یَفْقَهُوْنَ﴾ () ... “Say: The Fire of Hell is much more intense in heat, if only they understood.”