Surah Yasin, ayah 6

36:6

لِتُنذِرَ قَوۡمٗا مَّآ أُنذِرَ ءَابَآؤُهُمۡ فَهُمۡ غَٰفِلُونَ ٦

Litundhira qawmam mā undhira ābā'uhum fahum ghāfilūn

That you may warn a people whose forefathers were not warned, so they are unaware.