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Abu Huraira reported God’s messenger as saying, "By Him in whose hand Muhammad’s soul is, anyone of this people, Jew or Christian, who hears of me and then dies without believing in my message, will be among those who go to hell.” Muslim transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ لَا يسمع بِي أحدق مِنْ هَذِهِ الْأُمَّةِ يَهُودِيٌّ وَلَا نَصْرَانِيٌّ ثُمَّ يَمُوتُ وَلَمْ يُؤْمِنْ بِالَّذِي أُرْسِلْتُ بِهِ إِلَّا كَانَ من أَصْحَاب النَّار» . رَوَاهُ مُسلم
sunnah.com