2. Al-Baqara (The Cow)

Surah: 2   Aya: 145

145. Wala-in atayta allatheena ootoo alkitaba bikulli ayatin ma tabiAAoo qiblataka wama anta bitabiAAin qiblatahum wama baAAduhum bitabiAAin qiblata baAAdin wala-ini ittabaAAta ahwaahum min baAAdi ma jaaka mina alAAilmi innaka ithan lamina alththalimeena
  

  Translation

145. And even if you were to bring to the people of the Scripture (Jews and Christians) all the Ayât (proofs, evidences, verses, lessons, signs, revelations, etc.), they would not follow your Qiblah (prayer direction), nor are you going to follow their Qiblah (prayer direction). And they will not follow each other's Qiblah (prayer direction). Verily, if you follow their desires after that which you have received of knowledge (from Allâh), then indeed you will be one of the Zâlimûn (polytheists, wrong-doers, etc.).