Surah الصافاتVerse 71 of 182
وَلَقَدْ ضَلَّ قَبْلَهُمْ أَكْثَرُ الْأَوَّلِينَ
فَانظُرْ كَيْفَ كَانَ عَـقِبَةُ الْمُنذَرِينَ إِلاَّ عِبَادَ اللَّهِ الْمُخْلَصِينَ
(Then see what was the end of those who were warned. Except the chosen servants of Allah).