Surah Aali Imran (The Family of Imran), Verse 64

قُلْ یٰۤاَهْلَ الْكِتٰبِ تَعَالَوْا اِلٰی كَلِمَةٍ سَوَآءٍ بَیْنَنَا وَبَیْنَكُمْ اَلَّا نَعْبُدَ اِلَّا اللّٰهَ وَلَا نُشْرِكَ بِهٖ شَیْـًٔا وَّلَا یَتَّخِذَ بَعْضُنَا بَعْضًا اَرْبَابًا مِّنْ دُوْنِ اللّٰهِ فَاِنْ تَوَلَّوْا فَقُوْلُوا اشْهَدُوْا بِاَنَّا مُسْلِمُوْنَ ۟

Qul yaa Ahlal Kitaabi ta'aalaw ilaa Kalimatin sawaaa'im bainanaa wa bainakum allaa na'buda illal laaha wa laa nushrika bihee shai'anw wa laa yattakhiza ba'dunaa ba'dan arbaabam min doonil laah; fa in tawallaw faqoolush hadoo bi annaa muslimoon

“Say: “O people of the Book! come to common terms as between us and you: that we worship none but Allah; that we associate no partners with Him; that we erect not from among ourselves Lords and patrons other than Allah.” If then they turn back say: “Bear witness that we (at least) are Muslims (bowing to Allah’s will).””

Quran 3:64 (Yusuf Ali Translation)