Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
ahmad-zuhd:1526ʿAbdullāh > Muḥammad b. ʿAbbād al-Makkī > Fuḍayl b. ʿIyāḍ And Suʾil

[Machine] From his statement "[Every time their skins are burnt, We will change them for fresh skins]" (Quran 4:56), Hisham said on the authority of Al-Hasan: The Fire consumes them every day seventy thousand times. Whenever it finishes consuming them and their skin is renewed, they are told to return and they do so as they were before.  

الزهد لأحمد:١٥٢٦حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنَا مُحَمَّدُ بْنُ عَبَّادٍ الْمَكِّيُّ قَالَ سَمِعْتُ فُضَيْلَ بْنَ عِيَاضٍ وَسُئِلَ

عَنْ قَوْلِهِ ﷻ {كُلَّمَا نَضِجَتْ جُلُودُهُمْ بَدَّلْنَاهُمْ جُلُودًا غَيْرَهَا} [النساء 56] قَالَ هِشَامٌ عَنِ الْحَسَنِ تَأْكُلُهُ النَّارُ كُلَّ يَوْمٍ سَبْعِينَ أَلْفَ مَرَّةٍ كُلَّمَا أَكَلَتْهُمْ وَأَنْضَجَتْهُمْ قِيلَ لَهُمْ عُودُوا فَيَعُودُونَ كَمَا كَانُوا