Al-Qasas - 49

﴿قُلْ فَأْتُوا بِكِتَابٍ مِنْ عِنْدِ اللَّهِ هُوَ أَهْدَىٰ مِنْهُمَا أَتَّبِعْهُ إِنْ كُنْتُمْ صَادِقِينَ﴾

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(49) Say, "Then bring a scripture from Allāh which is more guiding than either of them that I may follow it, if you should be truthful."