Ibn Khurdadhbeh's 12 Kuras of Sawad:
set the ratio of price of Wheat to price of Barley is 3:2, and from 1 Kurr Wheat and 1 Kurr Barley cost 60 Dinar = 900 Dirham ( 1 Kurr grain weighted 2925kg )
from the Al-Karāj(land tax) data of Qudāma, in 1000 Dirham, in about 819-851AD, Nahru = Canal
"and" means 2 Ṭassāj, "+" means 1 Ṭassāj.
1, Shādh Fayrūz/Ḥulwān: 900 (added taxes from Kurds, from ibn:1800)
5 Ṭassāj
Al-Jabal, Tāmarrā and Irbil not found in al-Sāwad
2,Shādh Hurmuz: 10504 7
Ṭassāj
Buzurjasābūr:2442, 2 Rādhan: 4440, Jāzira and Al-Madīnatu al-'Atīqah:1320, Nahru Būq:568, Kalwādh+Nahru Bin:1320
3,Shādh Qubādh: 11213.5 8
Ṭassāj
Al-Dhibayn not found
Bandanijin:507.5, Rūstuqbādh:1290, Mahrūdh and Silsil(Bābil in Sasannid): 1770, Jalūlā + Jalultā:1000,Al-Dhibayn:1534, Barāz al-Rūz:3576, Daskarah:1536
4,Bāzijān Khusraw:8843 5
Ṭassāj
Upper Nahrawān: 1916, Central Nahrawān: 820,Lower Nahrawān: 1439,Bādurāyā and Bākūsāyā:4668
5,Shādh Sābūr/Kaskar: 23670(30000 Kurr Wheat? + 20000 Kurr Barley), 4
Ṭassāj
6,Shādh Bahmān/Dijla: 2356 4
Ṭassāj
Data from 873AD
7,Al-Ālī/The Upper Ustān:16196 4
Ṭassāj
Anbār:9076, Maskin:2130,Qaṭrabbul:1740, Bādurayā:3250
8, Ardashīr Bābakān:11270 5
Ṭassāj
Bahurasīr:1680, Rūmaqān:3220,Kūthā:2690, Nahru Durqīt:2000,Nahru Jawbar:1680
9,Bih Dhayūmasufān/Zawābi: 3598 (3 Al-Zāb
Ṭassāj )
10,Bihqubādh al-Awsaṭ(Centre Bihqubādh): 7432 6
Ṭassāj
Bābil and Khuṭarniyah: 3770, Upper Al-Fallūjah:520, Lower Al-Fallūjah:2440, Al-Nahrayn:351, Ayn al-Tamr:351
Ayn al-Tamr belong to Frontier district of Sasanid(al-Ḥīra) and should be the enclave in desert
11,Bihqubādh al-A'lā(Upper Bihqubādh): 11193 4
Ṭassāj
Al-Jubbah + al-Budāh: 2886, Sūrā + Barbīsama: 2455, Bārūsamā and Nahr al-Malik: 3452, 2 Bars: 2400( in Ibn Khurdadhbeh: Al-Sibayn + al-Wuqūf, not a Tassuj)
Nahr al-Malik setted later, and seems to be an enclave near Ardashīr Bābakān
12,Bihqubādh al-Asfal(Lower Bihqubādh): 7512.8 5
Ṭassāj
Furāt Bādaqlā: 2042, Saylahīn: 1220, Nistar: 2208, Hurmuzjird and Rūdhmistān: 470, Ighāru Yaqṭin: 1572.8
Rūdhmistān and Rūdhmistān setted later.Ighāru Yaqṭin is not a
Ṭassāj
Furāt Bādaqlā and Saylahīn belong to Frontier district of Sasanid(al-Ḥīra).
city: Wasit 30K Dirham, Basra 6000K Durham
History Revenue:
Revenue of as-Sawād under Kawād(488-531): 150 Million Dirhams mithāḳīl= 214 Million Dirhams
Revenue of Husraw II(607): central amd southern Iraq 168 Million dirhams in the old coinage, at the end of his reign 240 Million dirhams.
Al-Jizya in Uthmān period: 550000 Dinar= 5500K Dirham
Al-Karāj(land tax) in 'Umar ibn al-Khattāb period(634-644): 116 Million Dirham
Al-Karāj(land tax) in Mu'āwiya period(661-680): 150 Million Dirham(?20 Million from Hulwan, 10 Million from Tigris)
Al-Karāj(land tax) in Zeyād period(680-683): 125 Million Dirham
Al-Karāj(land tax) in 'Ubeydullah bin Zeyād period: 135 Million Dirham
Al-Karāj(land tax) in Hajāj period(694-714): 118 Million Dirham
#in 698, new dirham introduced, weight of dirham from 3.98g to 2.97g.
Al-Karāj(land tax) in 'Umar bin Abdul 'Azīz period(717-720): 120 Million Dirham
Al-Karāj(land tax) in Ibn Hubeyra period(720-724): 100 Million Dirham
Al-Karāj(land tax) in Yūsuf bin 'Umar period(742-743): 70 Million Dirham
Revenue in Hārūn al-Rashīd period(787-788): 80.78 Million Dirham from Iraq grains, 14.8 Million Dirham from Iraq's properties, 11.6 Million Dirham from Kaskar, 20.24 Million Dirham from Kūr Dijleh, 4.8 Million Dirham from Hulwān.
Revenue in al-Mamūn and al-Mu'tsṣim period from Qudāmah bin Ja'far(819): 114.45765 Million Dirham from Iraq, 0.9 Million Dirham from Hulwān. [Warning: use the grain price in the beginning of 10th century ]
Revenue in al-Wāthiq and al-Mutawakil period from Ibn Khurdādbih(middle of 9th century): 91.17984 Million Dirham from Iraq(71650 Kurr Wheat+ 112050 Kurr Barley), 8.5 Million Dirham from Kūr Dijleh, 6 Million Dirham from Barseh, 1.5 Million Dirham from Mustaqilāt Baqdād.
[Warning: use the grain price in the beginning of 10th century.]
Al-Karāj in 918-919: 27.3541 Million Dirham, Revenue in 918-919: 1.547734 Million Dinar= 30.95468 Million Dirham
Salary and Price of Grain:
common soldiers 20-80 dirhams per month, the cavalryman doubled.in 892-902, a policeman's salary is 50 dirhams per month.(under al-Ma'mūn:20 dirham=1 dinar/month, in AH200:500 dirham=25 dinar/month, before 917:12.5 dinar/month, in 917:4.17 dinar/month)
in 743-744, 1 dinar = 22.715/25.96 kg Wheat.(famine)
in 766-767: 0.112 dinar = 100kg wheat, in 768-769: 0.088 dinar(1 dinar = 12 dirham) = 100kg wheat,
in 791: 0.51 dinar = 100kg Wheat, 0.34 dinar = 100 kg Barley.
in 815: 0.34 dinar = 100kg wheat.
in 822: 4 dinar(1 dinar = 20 dirham) = 100kg wheat, in 874: 5 dinar = 100kg wheat and 4 dinar = 100kg barley.
in beginning of 10th century: 1.367 dinar = 100kg wheat and 0.68 dinar = 100kg wheat(Qūdama use it), in 919: 9 dinar = 100kg wheat
in late-Sasannid period:
Arḍ Jūkhā province:
Shādh Fīrūz/Ḥulwān: Fīrūz Qubādh(city: Ḥulwān), Khānikīn(Tassaj?)
Shādh Hurmuz: Buzurjasābūr(city:Ukbara), Lower Rādhan(city:Ḥale) and Upper Rādhan, Al-Madīna al-'Atīqa(Ctesiphon). Nahru Būq, Kalwādhā + Nahru Bin, Jāzir possibly exist.
Shādh Qubādh: Bābil Mahrūdh, Jalūlā(city:Jalūlā), Daskara(city: Daskara, another city: Dastagird).
Bāzijān Khusraw(centre city: Veh Antiokj-l Khosraw?): Upper Nahrawān(city:Nahrāwan), Central Nahrawān(city
ayr Al-Aqul) ,Lower Nahrawān(city:Jarjarāyā),Bādurāyā/Bēth Darayē,Bākūsāyā/Bēth Kosayē.
Khusraw Sābūr/Arḍ Kaskar province:
Az-Zandaward, Ath-Thurthūr, Al-Ustān(city:Kaskar), Jawāzir, Al-Mubārak.
Arḍ Maysān province: in Quarter of the South
Shādh Bahmān: Bahman Ardashir(city:al-Furāt), Maysān, Dast-i Maysān, Manādhir.
al-Madhār is the most important town before islam, is it a Tasasij?
Arḍ Bābil province:
Vēh-Artakhshatr: Behrasīr(city:Vēh-Artakhshatr), ar-Rūmaqān, Nahr Durqīṭ, Kūthā(city:Kūthā), Nahr Jawbar, Nahr al-Malik.
Firūz Sābūr/Shādh Fīrūz: Firūz Sābūr/Shādh Fīrūz(city:al-Anbār,containing Hīt and Ānāt), Maskin, Qaṭrabbul, Bādurāyā.
az-Zawābi: Upper Zāb, Lower Zāb.
Veh-Kavāt/Bihqubādh: Bārūsma, Bāniqyā, Upper al-Fallūja,Lower al-Fallūja, Bābil, Khutarniyya, an-Nahrayn, Nistar, Furāt Siryā,Hurmuzjird,Rūdhmistān.
after Islam conquest, Nistar, Furāt Siryā,Hurmuzjird and Rūdhmistān called Lower Bihqubādh, and not existed then, Furāt Siryā not existed in Abbasid period.
Frontier District(al-Ḥīra):
Furāt Bādaqlā,as-Saylaḥīn,aṣ-Ṣinnīn,Ayn at-Tamr