Surah Al-Baqarah, ayah 41

2:41

وَءَامِنُواْ بِمَآ أَنزَلۡتُ مُصَدِّقٗا لِّمَا مَعَكُمۡ وَلَا تَكُونُوٓاْ أَوَّلَ كَافِرِۭ بِهِۦۖ وَلَا تَشۡتَرُواْ بِـَٔايَٰتِي ثَمَنٗا قَلِيلٗا وَإِيَّٰيَ فَٱتَّقُونِ ٤١

Wa āminū bimā anzaltu musaddiqal limā ma'akum walā takūnū awwala kāfiri bihī walā tashtarū bi'āyātī thamanan qalīlan wa iyyāya fattaqūn

And believe in what I have sent down confirming that which is [already] with you, and be not the first to disbelieve in it. And do not exchange My signs for a small price, and fear [only] Me.