Dalil
العربية

Quran At-Tawbah 9:56

وَيَحۡلِفُونَ بِٱللَّهِ إِنَّهُمۡ لَمِنكُمۡ وَمَا هُم مِّنكُمۡ وَلَٰكِنَّهُمۡ قَوۡمٞ يَفۡرَقُونَ

Translation

And they swear by Allāh that they are from among you while they are not from among you; but they are a people who are afraid.