Surah Al-Qasas 28:49
قُلْ فَأْتُوا۟ بِكِتَٰبٍ مِّنْ عِندِ ٱللَّهِ هُوَ أَهْدَىٰ مِنْهُمَآ أَتَّبِعْهُ إِن كُنتُمْ صَٰدِقِينَ ٤٩
EnglishSahih International
Say, "Then bring a scripture from Allah which is more guiding than either of them that I may follow it, if you should be truthful."