Surah Al-Isra Verse 15 - English Translation by Shabbir Ahmed
Surah Al-Israمَّنِ ٱهۡتَدَىٰ فَإِنَّمَا يَهۡتَدِي لِنَفۡسِهِۦۖ وَمَن ضَلَّ فَإِنَّمَا يَضِلُّ عَلَيۡهَاۚ وَلَا تَزِرُ وَازِرَةٞ وِزۡرَ أُخۡرَىٰۗ وَمَا كُنَّا مُعَذِّبِينَ حَتَّىٰ نَبۡعَثَ رَسُولٗا
So, whoever goes right, does it for his own "Self", and whoever strays, strays against his own "Self". No person bears the load of another. And We never punish any people until We have sent a Messenger. (The Eternal Messenger now is the Book of Allah)