Aḥmad ibn Yaḥyá al-Balādhurī, The Origins of the Islamic State (1916)
“ One of the sheikhs of Wâsiṭ from other sheikhs:—When al-Ḥajjâj completed the erection of Wâsiṭ, he wrote to ʿAbd-al-Malik ibn-Marwân, "I have built a city in a hollow of the ground [kirsh] between al-Jabal and al-Miṣrain, and called it Wâsiṭ [lying halfway between] ." That is why the people of Wâsiṭ were called the Kirshîyûn. [3] Before he erected Wâsiṭ, al-Ḥajjâj had the idea of taking up his abode in aṣ-Ṣîn of Kaskar. He, therefore, dug Nahr [canal] aṣ-Ṣîn and ordered that the workmen be chained together so that none of them might run away as a deserter. ”
