Machine summary:
For the Muslim writers the vizicratc is nothing typically or solely Sassanid; for them it go~s without saying that viziers had also been acting in the Greek (Byzantine), Roman, Indian and Chinese empires, as well as in the pre-Islamic Arabic kingdoms.
'Abbas nominated ,\bu-Salama, vizier after his Coronation and then Abu-Salama was called "the helper (wazir)of the House of Muhammad.
Even the comparatively late 1-Fakhri, who cannot imagine an Abbasid caliph without a vizier, admits rat there is a controversy as to who was Abu-Salama's successor, and icntions that according to one tradition ' nobody ' assumed this title ccause of the bad omen adhering to it after Abu-Salarna's murder.
f, al-Baladhurf quotes the following words of al-Mansur : "Each of the great Umayyad caliphs had a man who did their work (Kafiya)3, but I have nobody of this description (wa' ana wala kafiya li).
calls Abu-Ayyub al-Muryiinl, the most · conspicuous of al-Mansurs servants who arc styled vizier by other sourccs.
As we lave seen, the name of a vizier appears in Tabarl in a list of officers under he first caliph.
Al-Rabi', the next man regarded as al-Mansur's vizier by many source appears as the caliph's personal attendant even more than Abu-Ayyul His origin was quite different from that of his predecessor.
The origin of the vizicratc from the personal service of the calipfi can l gathered with full clearness from the way by which, under the calipl following al-Mansur, many viziers arrived at their position.