156أَن تَقولوا إِنَّما أُنزِلَ الكِتابُ عَلىٰ طائِفَتَينِ مِن قَبلِنا وَإِن كُنّا عَن دِراسَتِهِم لَغافِلينَT. B. Irvinglest you say: "The Book was sent down to only two factions before us. We have been unaware of what they study."