I prayed by the side of the Messenger of Allah ﷺ in the supererogatory prayer and I heard him say: "I refuge in Allah from the Hell-Fire; woe to the inmates of the Hell-fire!"
صَلَّيْتُ إِلَى جَنْبِ رَسُولِ اللَّهِ ﷺ فِي صَلاَةِ تَطَوُّعٍ فَسَمِعْتُهُ يَقُولُ أَعُوذُ بِاللَّهِ مِنَ النَّارِ وَيْلٌ لأَهْلِ النَّارِ