20:16
فَلَا يَصُدَّنَّكَ عَنْهَا مَن لَّا يُؤْمِنُ بِهَا وَٱتَّبَعَ هَوَىٰهُ فَتَرْدَىٰ
So do not let one avert you from it who does not believe in it and follows his desire, for you [then] would perish.
Ta-Ha
فَلَا يَصُدَّنَّكَ عَنْهَا مَن لَّا يُؤْمِنُ بِهَا وَٱتَّبَعَ هَوَىٰهُ فَتَرْدَىٰ
So do not let one avert you from it who does not believe in it and follows his desire, for you [then] would perish.
Nearby ayahs help place verse 20:16 in sequence and meaning.
إِنَّنِىٓ أَنَا ٱللَّهُ لَآ إِلَـٰهَ إِلَّآ أَنَا۠ فَٱعْبُدْنِى وَأَقِمِ ٱلصَّلَوٰةَ لِذِكْرِىٓ
Indeed, I am Allah. There is no deity except Me, so worship Me and establish prayer for My remembrance.
إِنَّ ٱلسَّاعَةَ ءَاتِيَةٌ أَكَادُ أُخْفِيهَا لِتُجْزَىٰ كُلُّ نَفْسٍۭ بِمَا تَسْعَىٰ
Indeed, the Hour is coming - I almost conceal it - so that every soul may be recompensed according to that for which it strives.
وَمَا تِلْكَ بِيَمِينِكَ يَـٰمُوسَىٰ
And what is that in your right hand, O Moses?"
قَالَ هِىَ عَصَاىَ أَتَوَكَّؤُا۟ عَلَيْهَا وَأَهُشُّ بِهَا عَلَىٰ غَنَمِى وَلِىَ فِيهَا مَـَٔارِبُ أُخْرَىٰ
He said, "It is my staff; I lean upon it, and I bring down leaves for my sheep and I have therein other uses."