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ʾa-fa-ghayra llāhi ʾabtaghī ḥakaman wa-huwa lladhī ʾanzala ʾilaykumu l-kitāba mufaṣṣalan wa-lladhīna ʾātaynāhumu l-kitāba yaʿlamūna ʾannahū munazzalun min rabbika bi-l-ḥaqqi fa-lā takūnanna mina l-mumtarīna
[Say,] ‘Shall I seek a judge other than Allah, while it is He who has sent down to you the Book, well-elaborated?’ Those whom We have given the Book know that it has been sent down from your Lord with the truth; so do not be one of the skeptics.
— Ali Quli Qarai
Surah Al-‘An’am, Verse 114
114. "(Say :) 'Shall I seek a judge other than Allah , while it is He Who has sent down to you the Book, (fully) explained? And those whom We have given the Book know that it has been sent down from your Lord with the truth, so be not you of the doubters."
In fact, this verse is the conclusion of the previous verses. It indicates that, with all these clear verses which were recited, whom should be accepted as an arbitrator? The verse says:
This heavenly Book explains all the necessary training facts of man and has separated between right and wrong, light and darkness, and disbelief and Faith; and it is Allah Who has sent it down to you. Concerning this meaning, the Qur'an continues saying:
Then, addressing the Prophet (S), the verse implies that not only he and the Muslims know that this Book is from Allah, but also the people of the Book (The Jews and the Christians), who have seen the Signs of this heavenly Book in their own Books, know that this Book has been sent down from the Lord with the Truth. The verse says:
Therefore, there is no place of any doubt and hesitation in it, and you, O' Our Messenger, never doubt in it.