A question asked of the Fire
Two answers, and only one of them stops.
يُقَالُ لِجَهَنَّمَ هَلِ امْتَلأْتِ وَتَقُولُ هَلْ مِنْ مَزِيدٍ فَيَضَعُ الرَّبُّ تَبَارَكَ وَتَعَالَى قَدَمَهُ عَلَيْهَا فَتَقُولُ قَطِ قَطِ
It will be said to Hell: are you filled? And it will say: are there any more? Until the Lord of Honour places His foot over it and it says: enough, enough.
The full narration
Narrated Abu Huraira:(that the Prophet (ﷺ) said) "It will be said to the Hell, 'Are you filled?' It will say, 'Are there any more (to come)?' On that Allah will put His Foot on it, and it will say 'Qati! Qati! (Enough! Enough)
Source
Ṣaḥīḥ al-Bukhārī · 4849
Ṣaḥīḥ
- Agreed upon as authentic (al-Bukhārī / Muslim)