Aḥmad ibn Yaḥyá al-Balādhurī, The Origins of the Islamic State… (1916)
“ He once wrote to ʿAmr ibn-al-ʿÂṣi, "It has become revealed that thou ownest commodities, slaves, vases and animals which thou didst not possess when thou wert made governor of Egypt." ʿAmr wrote back, "Our land is a land of agriculture and trade; we, therefore, get as income more than what is necessary for our expenses." To this, ʿUmar replied, "I have had enough experience with the wicked ʿâmils. Thy letter is the letter of one disturbed because justice has been meted out to him. ”
