URDU TRANSLATION:
Please read the narration of Bukhari and find the person in Islamic history who changed the proven Quranic law and paracticed by holy Prophet (phbu)! You will find it that its Umar bin Khattab who changed it.
This is the difference between Shia and Sunni that Shia says anybody who goes against Allah and his Prophet, Shia says that person has no credibility but our sunni fellows still defend and salute that person.