Aal-'Imran - 3:73

وَلاَ تُؤْمِنُواْ إِلاَّ لِمَن تَبِعَ دِينَكُمْ قُلْ إِنَّ الْهُدَى هُدَى اللّهِ أَن يُؤْتَى أَحَدٌ مِّثْلَ مَا أُوتِيتُمْ أَوْ يُحَآجُّوكُمْ عِندَ رَبِّكُمْ قُلْ إِنَّ الْفَضْلَ بِيَدِ اللّهِ يُؤْتِيهِ مَن يَشَاء وَاللّهُ وَاسِعٌ عَلِيمٌ
[3:73]
And do not believe but in him who follows your religion. Say: Surely the (true) guidance is the guidance of Allah-- that one may be given (by Him) the like of what you were given; or they would contend with you by an argument before your Lord. Say: Surely grace is in the hand of Allah, He gives it to whom He pleases; and Allah is Ample-giving, Knowing.
"And believe no one unless he follows your religion." Say: "True guidance is the Guidance of Allah: (Fear ye) Lest a revelation be sent to someone (else) Like unto that which was sent unto you? or that those (Receiving such revelation) should engage you in argument before your Lord?" Say: "All bounties are in the hand of Allah: He granteth them to whom He pleaseth: And Allah careth for all, and He knoweth all things."
And believe not save in one who followeth your religion - Say (O Muhammad): Lo! the guidance is Allah's Guidance - that anyone is given the like of that which was given unto you or that they may argue with you in the presence of their Lord. Say (O Muhammad): Lo! the bounty is in Allah's hand. He bestoweth it on whom He will. Allah is All-Embracing, All-Knowing.