36:6
لِتُنذِرَ قَوْمًا مَّآ أُنذِرَ ءَابَآؤُهُمْ فَهُمْ غَـٰفِلُونَ
litundhira qawman mā undhira ābāuhum fahum ghāfilūna
to warn a people whose forefathers were not warned, and so they are unaware.
In order that you may warn a people whose forefathers were not warned, so they are heedless.