إِنَّآ أَرْسَلْنَآ إِلَيْكُمْ رَسُولًا شَـٰهِدًا عَلَيْكُمْ كَمَآ أَرْسَلْنَآ إِلَىٰ فِرْعَوْنَ رَسُولًا
Indeed, We have sent to you a Messenger as a witness upon you just as We sent to Pharaoh a messenger.
The Enshrouded One
إِنَّآ أَرْسَلْنَآ إِلَيْكُمْ رَسُولًا شَـٰهِدًا عَلَيْكُمْ كَمَآ أَرْسَلْنَآ إِلَىٰ فِرْعَوْنَ رَسُولًا
Indeed, We have sent to you a Messenger as a witness upon you just as We sent to Pharaoh a messenger.
Nearby ayahs help place verse 73:15 in sequence and meaning.
وَطَعَامًا ذَا غُصَّةٍ وَعَذَابًا أَلِيمًا
And food that chokes and a painful punishment -
يَوْمَ تَرْجُفُ ٱلْأَرْضُ وَٱلْجِبَالُ وَكَانَتِ ٱلْجِبَالُ كَثِيبًا مَّهِيلًا
On the Day the earth and the mountains will convulse and the mountains will become a heap of sand pouring down.
فَعَصَىٰ فِرْعَوْنُ ٱلرَّسُولَ فَأَخَذْنَـٰهُ أَخْذًا وَبِيلًا
But Pharaoh disobeyed the messenger, so We seized him with a ruinous seizure.
فَكَيْفَ تَتَّقُونَ إِن كَفَرْتُمْ يَوْمًا يَجْعَلُ ٱلْوِلْدَٰنَ شِيبًا
Then how can you fear, if you disbelieve, a Day that will make the children white- haired?