2. Al-Baqara (The Cow)

Surah: 2   Aya: 91

91. Wa-itha qeela lahum aminoo bima anzala Allahu qaloo nu/minu bima onzila AAalayna wayakfuroona bima waraahu wahuwa alhaqqu musaddiqan lima maAAahum qul falima taqtuloona anbiyaa Allahi min qablu in kuntum mu/mineena
  

  Translation

91. And when it is said to them (the Jews), "Believe in what Allâh has sent down," they say, "We believe in what was sent down to us." And they disbelieve in that which came after it, while it is the truth confirming what is with them. Say (O Muhammad Peace be upon him to them): "Why then have you killed the Prophets of Allâh aforetime, if you indeed have been believers?"