Surah Al-Baqarah (The Cow), Verse 140

اَمْ تَقُوْلُوْنَ اِنَّ اِبْرٰهٖمَ وَاِسْمٰعِیْلَ وَاِسْحٰقَ وَیَعْقُوْبَ وَالْاَسْبَاطَ كَانُوْا هُوْدًا اَوْ نَصٰرٰی قُلْ ءَاَنْتُمْ اَعْلَمُ اَمِ اللّٰهُ وَمَنْ اَظْلَمُ مِمَّنْ كَتَمَ شَهَادَةً عِنْدَهٗ مِنَ اللّٰهِ وَمَا اللّٰهُ بِغَافِلٍ عَمَّا تَعْمَلُوْنَ ۟

Am taqooloona inna Ibraaheema wa Ismaa'eela wa Ishaaqa wa Ya'qooba wal asbaata kaanoo Hoodan aw Nasaaraa; qul 'a-antum a'lamu amil laah; wa man azlamu mimman katama shahaadatan 'indahoo minallaah; wa mallaahu bighaafilin 'ammaa ta'maloon

“Or do ye say that Abraham, Isma'il Isaac, Jacob and the Tribes were Jews or Christians? Say: Do ye know better than Allah? Ah! who is more unjust than those who conceal the testimony they have from Allah? but Allah is not unmindful of what ye do!”

Quran 2:140 (Yusuf Ali Translation)