Belief in all of Allah's scriptures and messengers

لَّـٰكِنِ ٱلرَّٰسِخُونَ فِى ٱلْعِلْمِ مِنْهُمْ وَٱلْمُؤْمِنُونَ يُؤْمِنُونَ بِمَآ أُنزِلَ إِلَيْكَ وَمَآ أُنزِلَ مِن قَبْلِكَ ۚ وَٱلْمُقِيمِينَ ٱلصَّلَوٰةَ ۚ وَٱلْمُؤْتُونَ ٱلزَّكَوٰةَ وَٱلْمُؤْمِنُونَ بِٱللَّهِ وَٱلْيَوْمِ ٱلْـَٔاخِرِ أُو۟لَـٰٓئِكَ سَنُؤْتِيهِمْ أَجْرًا عَظِيمًا

But those firm in knowledge among them and the believers believe in what has been revealed to you, [O Muḥammad], and what was revealed before you. And the establishers of prayer [especially] and the givers of zakāh and the believers in Allāh and the Last Day - those We will give a great reward.