﴿ إِنَّآ أَنزَلْنَآ إِلَيْكَ ٱلْكِتَٰبَ بِٱلْحَقِّ لِتَحْكُمَ بَيْنَ ٱلنَّاسِ بِمَآ أَرَىٰكَ ٱللَّهُ ۚ وَلَا تَكُن لِّلْخَآئِنِينَ خَصِيمًۭا ﴾

“BEHOLD, We have bestowed upon thee from on high this divine writ, setting forth the truth, so that thou may judge between people in accordance with what God has taught thee. Hence, do not contend with those who are false to their trust,”

Then Allah mentioned the story of Tu'mah Ibn Ubayriq who stole the armour and the Jew, Zayd Ibn Samin, who was accused of this theft, saying: (Lo! We reveal unto thee the Scripture) We have sent you Gabriel with the Qur'an (with the Truth) to show what is true and what is false, (that thou mayst judge between mankind) justly: between Tu'mah and Zayd Ibn Samin (by that which Allah showeth thee) by that which Allah hath taught and shown you in the Qur'an. (And be not thou a pleader) a helper (for the treacherous) through their theft, i.e. Tu'mah;