Ibn `Umar reported God's messenger as saying, "When the inhabitants of paradise come to paradise and the inhabitants of hell come to hell, death will be brought and placed between paradise and hell, then slain. A crier will call, `Inhabitants of paradise, there is no death, and inhabitants of hell, there is no death.' This will add joy to the joy of the inhabitants of paradise and grief to the grief of the inhabitants of hell." (Bukhari and Muslim.)
Source: sunnah.com
Other translations
Arabic
وَعَنِ ابْنِ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " إِذَا صَارَ أَهْلُ الْجَنَّةِ إِلَى الْجَنَّةِ وَأَهْلُ النَّارِ إِلَى النَّارِ جِيءَ بِالْمَوْتِ حَتَّى يُجْعَلَ بَيْنَ الْجَنَّةِ وَالنَّارِ ثُمَّ يُذْبَحَ ثُمَّ يُنَادِي مُنَادٍ: يَا أَهْلَ الْجَنَّةِ لَا مَوْتَ وَيَا أَهْلَ النَّارِ لَا مَوْتَ. فَيَزْدَادُ أَهْلُ الْجَنَّةِ فَرَحًا إِلَى فَرَحِهِمْ وَيَزْدَادُ أَهْلُ النَّارِ حُزْنًا إِلَى حزنهمْ ". مُتَّفق عَلَيْهِ
sunnah.com