Harun al-Rashid's son, Al-Ma'mun (whose mother was Persian), is even quoted as saying: The Persians ruled for a thousand years and did not need us Arabs even for a day.
O califa Al-Ma'mun, fillo de Harun al-Rashid e de nai persa, é citado frecuentemente como autor das seguintes palabras: Os persas gobernamos durante mil anos sen necesitarmos nin un só día aos árabes.