﴿ أُو۟لَٰٓئِكَ ٱلَّذِينَ ءَاتَيْنَٰهُمُ ٱلْكِتَٰبَ وَٱلْحُكْمَ وَٱلنُّبُوَّةَ ۚ فَإِن يَكْفُرْ بِهَا هَٰٓؤُلَآءِ فَقَدْ وَكَّلْنَا بِهَا قَوْمًۭا لَّيْسُوا۟ بِهَا بِكَٰفِرِينَ ﴾

“[but] it was to them that We vouchsafed revelation, and sound judgment, and prophethood. And now, although the unbelievers may choose to deny these truths, [know that] We have entrusted them to people who will never refuse to acknowledge them-”

They are the ones to whom We gave the Scripture meaning the Books of God judgement wisdom and prophethood; so if these people of Mecca disbelieve therein that is in these three then indeed We have entrusted it to We have set aside for it a people who do not disbelieve in it namely the Emigrants Muhājirūn and the Helpers Ansār.