فَاِنۡ كَذَّبُوۡكَ فَقَدۡ كُذِّبَ رُسُلٌ مِّنۡ قَبۡلِكَ جَآءُوۡ بِالۡبَيِّنٰتِ وَالزُّبُرِ وَالۡكِتٰبِ الۡمُنِيۡرِ

Then if they deny you, [O Muhammad] - so were messengers denied before you, who brought clear proofs and written ordinances and the enlightening Scripture