Jami` at-Tirmidhi, Book 47, Hadith 3549 (In-Book) ⓘ
Narrated Mujahid: that Ibn 'Abbas said: "Do you know what is the width of Jahannam?" I said: "No." He said: "Yes, and by Allah I do not know. 'Aishah narrated to me that she asked the Messenger of ALlah about Allah's saying: 'On the Day of Resurrection the whole earth will be grasped by His Hand and the heavens will be rolled up in his Right Hand (39:67).' She said: 'I said "Where will the people be on that day O Messenger of Allah?" He said: "Upon the bridge over Jahannam."
حَدَّثَنَا سُوَيْدُ بْنُ نَصْرٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ، عَنْ عَنْبَسَةَ بْنِ سَعِيدٍ، عَنْ حَبِيبِ بْنِ أَبِي عَمْرَةَ، عَنْ مُجَاهِدٍ، قَالَ قَالَ ابْنُ عَبَّاسٍ أَتَدْرِي مَا سَعَةُ جَهَنَّمَ قُلْتُ لاَ . قَالَ أَجَلْ وَاللَّهِ مَا تَدْرِي . حَدَّثَتْنِي عَائِشَةُ أَنَّهَا سَأَلَتْ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ قَوْلِهِ : (والأَرْضُ جَمِيعًا قَبْضَتُهُ يَوْمَ الْقِيَامَةِ وَالسَّمَوَاتُ مَطْوِيَّاتٌ بِيَمِينِهِ ) قَالَتْ قُلْتُ فَأَيْنَ النَّاسُ يَوْمَئِذٍ يَا رَسُولَ اللَّهِ قَالَ " عَلَى جِسْرِ جَهَنَّمَ " . وَفِي الْحَدِيثِ قِصَّةٌ . قَالَ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ غَرِيبٌ مِنْ هَذَا الْوَجْهِ .
also referenced under: Hadith 3241 (Reference) & Volume 5, Book 44, Hadith 3241 (DarusSalam)