True Believers Believe in All of The Qur’an

رَبَّنَا لَا تُزِغْ قُلُوبَنَا بَعْدَ إِذْ هَدَيْتَنَا وَهَبْ لَنَا مِن لَّدُنكَ رَحْمَةً ۚ إِنَّكَ أَنتَ ٱلْوَهَّابُ

˹They say,˺ “Our Lord! Do not let our hearts deviate after you have guided us. Grant us Your mercy. You are indeed the Giver ˹of all bounties˺.

And;

رَبَّنَآ إِنَّكَ جَامِعُ ٱلنَّاسِ لِيَوْمٍۢ لَّا رَيْبَ فِيهِ ۚ إِنَّ ٱللَّهَ لَا يُخْلِفُ ٱلْمِيعَادَ

Our Lord! You will certainly gather all humanity for the ˹promised˺ Day—about which there is no doubt. Surely Allah does not break His promise.”

Surah Ali Imran, 3:8-9