And if you are in doubt about what We have sent down [i.e., the Quran]."
And if you are in doubt about what We have sent down [i.e., the Quran] upon Our Servant [i.e., Prophet Mohamed ], then produce a s´rah the like thereof and call upon your witnesses [i.e., supporters] other than Allah, if you should be truthful.But if you do not – then fear the Fire, whose fuel is people and stones, prepared for the disbel...
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