Quran 23:74 from Surah Al-Muminoon on Divine Marvels.
وَإِنَّ ٱلَّذِينَ لَا يُؤۡمِنُونَ بِٱلۡأٓخِرَةِ عَنِ ٱلصِّرَٰطِ لَنَٰكِبُونَ
English translation: And indeed those who (do) not believe in the Hereafter from the path surely (are) deviating
Transliteration: wa-inna alladhina la yu'minuna bil-akhirati ani al-sirati lanakibuna