Dalil
العربية

Quran Al-Qasas 28:52

ٱلَّذِينَ ءَاتَيۡنَٰهُمُ ٱلۡكِتَٰبَ مِن قَبۡلِهِۦ هُم بِهِۦ يُؤۡمِنُونَ

Translation

Those to whom We gave the Scripture before it - they are believers in it.