Justic in Islam

 in the age of caliphate(ruler of islsmic country)of Imam Ali(first Imam of Shia muslim).armor of Imam Ali was lost after while this armor seen in hand of christian person.Imam Ali bring him to the court.Imam Ali said to judge ((this armor is for me,I didnt sell it,(and) ididnt forgive it andhow i found it in the hand of this man)).judge said to christian man((caliphate said his claim whats yoir idea?))christian man said((this armoris mine at the same time i dont deny  claim of caliphate )maybe he make mistake)).judge said to Imam Ali ((you are pretendy and this man is denier and you must bring witness for your claim)).Imam Ali laghed and said ((judge says right how i must bring witness but i dont have witness))according to this principle judge ruled in christian man favor and christian man bring armor and went out. but christian man knew that armor is for Imam Ali and his conscience was sad and he came back and said to Imam Ali ((this kind of rule and behavior isnt behaviorof normal man and its rule of prophets and he became Muslim and he fight passionately in the war near Imam Ali