Surah Al-Baqarah — Ayah 111 (2:111)
وَقَالُواْ لَن يَدۡخُلَ ٱلۡجَنَّةَ إِلَّا مَن كَانَ هُودًا أَوۡ نَصَٰرَىٰۗ تِلۡكَ أَمَانِيُّهُمۡۗ قُلۡ هَاتُواْ بُرۡهَٰنَكُمۡ إِن كُنتُمۡ صَٰدِقِينَ ١١١
English translation (Saheeh International)
And they say, "None will enter Paradise except one who is a Jew or a Christian." That is [merely] their wishful thinking. Say, "Produce your proof, if you should be truthful."
Brief commentary
The Jews and the Christians each said that Paradise would be for them alone. These were just their vain wishes and imaginings. Tell them, O Prophet, in reply, to bring proof of what they were claiming if they were telling the truth.