فَإنْ حَآجُّوكَ فَقُلْ أَسْلَمْتُ وَجْهِيَ لِلّهِ وَمَنِ اتَّبَعَنِ وَقُل لِّلَّذِينَ أُوْتُواْ الْكِتَابَ وَالأُمِّيِّينَ أَأَسْلَمْتُمْ فَإِنْ أَسْلَمُواْ فَقَدِ اهْتَدَواْ وَّإِن تَوَلَّوْاْ فَإِنَّمَا عَلَيْكَ الْبَلاَغُ وَاللّهُ بَصِيرٌ بِالْعِبَادِ
﴿٢٠﴾
سورة آل عمران
(3/20) Wherefore if they contend with thee, say thou: have surrendered myself unto Allah and he who followeth me. And say thou unto those who have been vouchsafed the Book and unto the illiterates; do you (also) accept Islam? Then if they accept Islam, they are of a surety guided; and if they turn away, then upon thee is only the preaching, and Allah is Beholder of His bondsmen.
Surah Al Imran