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 ye: "Bear witness that we (at least) are Muslims (bowing to allah.s Will).
( سورة آل عمران , Aal-e-Imran, Chapter #3, Verse #64)

There is among them a section who distort the book with their tongues: (As they read) you would think it is a part of the book, but it is no part of the book; and they say, "That is from allah," but it is not from allah. It is they who tell a lie against allah, and (well) they know it!
( سورة آل عمران , Aal-e-Imran, Chapter #3, Verse #78)