The Holy Quran 17:109 — Surah Al-Isra

Arabic text

وَيَخِرُّونَ لِلْأَذْقَانِ يَبْكُونَ وَيَزِيدُهُمْ خُشُوعًا ۩

Translation

They fall weeping (excessively) on their chins and it (the Qur'aan) increases their humility (their submission to Allaah). (One who recites or hearsthis verse being recited should perform Sajdah.)

Tafsir (excerpt) — Tafsir Usmani

that is, on hearing the Quran they are overcome with tenderness of heart, and when they prostrate, their humility increases still further. The word adhqan (chins) perhaps hints that they go to great lengths in their prostration, as if pressing even their chins to the ground; or it may simply be a figurative expression for prostrating on the face.

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