21:57
وَتَٱللَّهِ لَأَكِيدَنَّ أَصْنَـٰمَكُم بَعْدَ أَن تُوَلُّوا۟ مُدْبِرِينَ
watal-lahi la-akīdanna aṣnāmakum baʿda an tuwallū mud'birīna
By God I shall certainly plot against your idols as soon as you have turned your backs!’
"And by Allâh, I shall plot a plan (to destroy) your idols after you have gone away and turned your backs."