قُلۡ يَٰٓأَهۡلَ ٱلۡكِتَٰبِ تَعَالَوۡاْ إِلَىٰ كَلِمَةٖ سَوَآءِۭ بَيۡنَنَا وَبَيۡنَكُمۡ أَلَّا نَعۡبُدَ إِلَّا ٱللَّهَ وَلَا نُشۡرِكَ بِهِۦ شَيۡـٔٗا وَلَا يَتَّخِذَ بَعۡضُنَا بَعۡضًا أَرۡبَابٗا مِّن دُونِ ٱللَّهِۚ فَإِن تَوَلَّوۡاْ فَقُولُواْ ٱشۡهَدُواْ بِأَنَّا مُسۡلِمُونَ

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).”

— Aali Imran (آلِ عِمْرَان), 3:64