Is intercession permissible after the case reaches the Imam concerning prescribed punishments?

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Intercession is not permissible once the case reaches the Imam. This is agreed upon universally. This prohibition exists because such intercession constitutes the nullification of a right due to Allah, the Exalted. The Prophet, peace be upon him, became angry when Usama interceded for the Makhzumiyyah woman who stole, exclaiming, "Do you intercede concerning a prescribed punishment of Allah?" Ibn Umar stated that whoever's intercession prevents the establishment of a prescribed punishment of Allah has opposed Allah in His judgment.