2. Al-Baqara (The Cow)

Surah: 2   Aya: 140

140. Am taqooloona inna ibraheema wa-ismaAAeela wa-ishaqa wayaAAqooba waal-asbata kanoo hoodan aw nasara qul aantum aAAlamu ami Allahu waman athlamu mimman katama shahadatan AAindahu mina Allahi wama Allahu bighafilin AAamma taAAmaloona
  

  Translation

140. Or say you that Ibrâhim (Abraham), Ismâ'il (Ishmael), Ishâque (Isaac), Ya'qûb (Jacob) and Al-Asbât [the twelve sons of Ya'qûb (Jacob)] were Jews or Christians? Say, "Do you know better or does Allâh (knows better… that they all were Muslims)? And who is more unjust than he who conceals the testimony [i.e. to believe in Prophet Muhammad Peace be upon him when he comes, written in their Books. (See Verse 7:157)] he has from Allâh? And Allâh is not unaware of what you do."