Malik related to me from Abu'z-Zinad from al-Araj from Abu Hurayra that the Messenger of Allah ﷺ said, "The fire of the children of Adam which they kindle is a seventieth part of the fire of Jahannam." They said, "Messenger of Allah, this fire is certainly enough." He said, "That fire is sixty- nine times greater."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ نَارُ بَنِي آدَمَ الَّتِي يُوقِدُونَ جُزْءٌ مِنْ سَبْعِينَ جُزْءًا مِنْ نَارِ جَهَنَّمَ فَقَالُوا يَا رَسُولَ اللَّهِ إِنْ كَانَتْ لَكَافِيَةً قَالَ إِنَّهَا فُضِّلَتْ عَلَيْهَا بِتِسْعَةٍ وَسِتِّينَ جُزْءًا  

Malik related to me from his paternal uncle Abu Suhayl ibn Malik from his father that Abu Hurayra said, "Do you think that it is red like this fire of yours? It is blacker than tar."  

أَنَّهُ قَالَ أَتُرَوْنَهَا حَمْرَاءَ كَنَارِكُمْ هَذِهِ لَهِيَ أَسْوَدُ مِنَ الْقَارِ وَالْقَارُ الزِّفْتُ