فَإِنْ حَاجُّوكَ فَقُلْ أَسْلَمْتُ وَجْهِيَ لِلَّهِ وَمَنِ اتَّبَعَنِ ۗ وَقُل لِّلَّذِينَ أُوتُوا الْكِتَابَ وَالْأُمِّيِّينَ أَأَسْلَمْتُمْ ۚ فَإِنْ أَسْلَمُوا فَقَدِ اهْتَدَوا ۖ وَّإِن تَوَلَّوْا فَإِنَّمَا عَلَيْكَ الْبَلَاغُ ۗ وَاللَّهُ بَصِيرٌ بِالْعِبَادِ (20)
(3:20) And if they remonstrate with you, tell them: 'I have submitted my whole being to Allah, and so have those who follow me.' And ask the People of the Book as well as those who follow no heavenly Scripture: 'Have you also submitted (to Allah)?' *18 If they have submitted to Him, they are indeed on the right way but if they deviate from submitting to Allah, then your duty is merely to deliver the message. Allah observes the affairs of His servants.
*18). The Prophet (peace be on him) is asked to tell them in effect: I and my followers have embraced the original, unadulterated Islam which is the true religion enjoined by God. Tell us, now, if you are prepared to give up the accretions introduced by your forefathers, and embrace this original, true religion?'