Aḥmad ibn Yaḥyá al-Balādhurī, The Origins of the Islamic State (1916)
“ Ṣâliḥ's father was one of the captives of Sijistân. Through Zâdân Farrûkh, Ṣâliḥ was acquainted with al-Ḥajjâj, who found him acceptable. One day Ṣâliḥ said to Zâdân, "Thou art the means by which I became acquainted with the governor; and I see that he has found me acceptable. I, therefore, do not wonder if he should promote me over thee, in which case thou wouldst fall." "Never believe that," answered Zḥâdân; "he has more use for me than I for him, because none but myself can be found to keep his books." "By Allah," retorted Ṣâliḥ, "if thou so desire, I could change the accounts into Arabic." ”
