Musannaf Ibn Abi Shaybah

Hazrat Jarir bin Hazim narrates that I read the letter of Hazrat Umar bin Abdul Aziz written to Adi bin Arta’ah. After praise and salutations, he inquired about the slave who falsely accused a free person, asking how many lashes should be given to him. And he mentioned that he had received news that when he was in Madinah, he had given the slave forty lashes, but in his last action, he had given the slave eighty lashes. Indeed, the lashes he had given earlier were based on his own opinion which he had formed, and indeed, the lashes he had given in his last action were in accordance with the Book of Allah. Therefore, you should also give him eighty lashes.