28:49
قُلْ فَأْتُوا۟ بِكِتَـٰبٍ مِّنْ عِندِ ٱللَّهِ هُوَ أَهْدَىٰ مِنْهُمَآ أَتَّبِعْهُ إِن كُنتُمْ صَـٰدِقِينَ٤٩
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."
— Saheeh International