Quran 2, Al-Baqara (The Cow) ⓘ

2:41And believe in that which I reveal, confirming that which ye possess already (of the Scripture), and be not first to disbelieve therein, and part not with My revelations for a trifling price, and keep your duty unto Me.

وَآمِنُوا بِمَا أَنْزَلْتُ مُصَدِّقًا لِمَا مَعَكُمْ وَلَا تَكُونُوا أَوَّلَ كَافِرٍ بِهِ وَلَا تَشْتَرُوا بِآيَاتِي ثَمَنًا قَلِيلًا وَإِيَّايَ فَاتَّقُونِ