The Holy Quran 23:63 — Surah Al-Mu'minun

Arabic text

بَلْ قُلُوبُهُمْ فِى غَمْرَةٍ مِّنْ هَـٰذَا وَلَهُمْ أَعْمَـٰلٌ مِّن دُونِ ذَٰلِكَ هُمْ لَهَا عَـٰمِلُونَ

Translation

However (on the contrary), their hearts (the hearts of the Kuffaar) are in ignorance about this (religion). And they have other (evil) acts that they carry out besides this (besides their ignorance and doubts). (They therefore have a great deal to answer for.)

Tafsir (excerpt) — Tafsir Usmani

Heedlessness of the Hereafter: that is, these people are heedless of the reckoning of the Hereafter and are caught up in other worldly affairs, from which they never have the leisure to emerge and turn their attention to the Hereafter. Or the meaning is that their hearts are drowned in the dark waves of doubt and wavering, heedlessness and ignorance.

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