The historian Eliyahu Ashtor wrote in 1976 that agricultural production declined in the period immediately after the Arab conquest in areas of Mesopotamia and Egypt, on the limited basis of records of taxes collected on cultivated areas.
Sejarawan Eliyahu Ashtor menulis pada tahun 1976 bahwa produksi pertanian menurun di daerah Irak (Mesopotamia) dan Mesir berdasarkan catatan dari pajak yang dikumpulkan di daerah dibudidayakan.