﴿ بِسْمِ ٱللَّهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ لَمْ يَكُنِ ٱلَّذِينَ كَفَرُوا۟ مِنْ أَهْلِ ٱلْكِتَٰبِ وَٱلْمُشْرِكِينَ مُنفَكِّينَ حَتَّىٰ تَأْتِيَهُمُ ٱلْبَيِّنَةُ ﴾

“IT IS NOT [conceivable] that such as are bent on denying the truth - [be they] from among the followers of earlier revelation or from among those who ascribe divinity to aught beside God should ever be abandoned [by Him] ere there comes unto them the [full] evidence of the truth:”

The disbelievers from among min explicative the People of the Scripture and the idolaters that is the idol-worshippers wa’l-mushrikīna is a supplement to ahl ‘the People of’ were not going to leave off munfakkīna is the predicate of yakun ‘were’ that is to say they were not going to abandon their ways until the clear proof namely Muhammad (s) should come to them that is until it came to them;