Yā-Sīn - 6

﴿لِتُنْذِرَ قَوْمًا مَا أُنْذِرَ آبَاؤُهُمْ فَهُمْ غَافِلُونَ﴾

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6. In order that you may warn a people whose forefathers were not warned, so they are heedless.