Idara ya viwanda ni idara inayosimamia mambo yote yanayohusiana na viwanda, iwe ni viwanda vizito kama vile utengenezaji wa injini za magari, injini, magari, vifaa vya ujenzi, na vifaa vya umeme, au viwanda vyepesi. Viwanda vyote, vya umma au vya watu binafsi, ambavyo vina uhusiano na viwanda vya kijeshi, lazima vifuate sera ya vita. Hii ni kwa sababu Jihadi na mapigano yanahitaji jeshi, na jeshi linahitaji silaha. Ili silaha hizi ziwe za kiwango cha juu kabisa na zipatikane kikamilifu, ni lazima kuwepo na viwanda ndani ya Dola, hasa viwanda vya kijeshi kutokana na uhusiano wake mkubwa na jihadi.

The department of industry is the department that takes charge of all the affairs related to industry, whether they pertain to heavy industry like manufacturing of motors, engines, vehicles, materials, electrical equipment, or light industry. All factories public or private property, which have a relationship with the military industries, must be based on the war policy. This is because Jihad and fighting require an army, which requires weapons. In order that these weapons be of the highest level and fully available, it is necessary to have an industry within the State, particularly the military industry due to its strong relationship with jihad. .

Ili Dola ipate kujitegemea kutoka nchi nyingine na isiathiriwe na yoyote kati yao, inapaswa kutengeneza na kuendeleza silaha zake yenyewe. Hii inaifanya kuwa huru na kuwa na daima silaha za kisasa na zenye nguvu zaidi, bila kujali kiwango cha maendeleo na uboreshaji wa silaha. Pia ingekuwa na kila kinachohitajika katika silaha za kuwatisha maadui wa wazi na wanaowezekana, kama Allah (S.W.T) anavyosema:

In order that the State becomes independent of other countries and does not become influenced by any of them, it should manufacture and develop its own weapons by itself. This makes it independent and in continuous possession of the most advanced and strongest weaponry, regardless of the level of development and advancement of weapons. It would also have at its disposal, all that it needs of weapons to intimidate, both the evident and potential enemies, as Allah (S.W.T) says:.

"Wandaeni kwa ajili yao nguvu zote mnazoweza za kijeshi na farasi waliofungwa, ili kwa hayo muwatishe adui wa Allah na adui yenu, na wengine wasiokuwa wao ambao hamwajui. Allah anawajua."

“Make ready for them all you can of (armed) force and of horses tethered, that thereby you may dismay the enemy of Allah and your enemy, and others beside them whom you know not. Allah knows them.” [TMQ 8:60] .

Kwa hiyo Dola ingekuwa na mapenzi yake yenyewe, ingetengeneza silaha inazozihitaji na kuziendeleza kila wakati ili iwe na silaha zilizo imara na zilizoendelea zaidi, ili kuwatisha maadui wote wa wazi na wa kuweza kuwa maadui. Kwa hiyo ni wajibu kwa Dola kutengeneza silaha yenyewe, na haifai kutegemea Dola nyingine, kwa sababu hilo linaziruhusu Dola nyingine kuidhibiti, mapenzi yake, silaha zake na mapigano yake.

As such the State would have its own will, produce the weapons that it needs and develop them continuously so that it owns the strongest and most developed weapons in order to terrify all the evident and potential enemies. Therefore it is a duty upon the State to manufacture weapons by itself and it is not allowed to depend upon other States, because this allows other States to control it, its will, its weapons and its fighting..

Ni dhahiri duniani leo kwamba mataifa yanayouza silaha kwa mataifa mengine kwa kawaida hayauzi kila silaha, hasa silaha zilizoendelea zaidi. Hayauzi hata silaha isipokuwa kwa masharti fulani yanayofunika matumizi yake. Hayatauza isipokuwa kwa idadi ambayo yenyewe, si nchi zinazonunua, ndiyo inayoamua. Hili linayapa taifa linalouza silaha mamlaka na ushawishi juu ya taifa linalonunua silaha, likiliwezesha kulazimisha mapenzi yake juu ya taifa linalonunua, hasa ikiwa lilishiriki vita. Katika hali hiyo lingehitaji silaha zaidi, vipuri, na risasi, jambo litakaloongeza utegemezi wake kwa taifa linalosafirisha silaha zake na kuongeza unyenyekevu wake kwa matakwa ya mataifa mengine. Hili linaliwezesha taifa linalosafirisha silaha kulidhibiti na kudhibiti mapenzi yake, hasa wakati wa vita na wakati wa uhitaji mkubwa wa silaha na vipuri. Hivyo taifa kama hilo lingejifanya mateka wenyewe, mapenzi yake na utambulisho wake mikononi mwa taifa linalolisafirishia silaha. Kwa sababu hizi zote, taifa lina wajibu wa kutengeneza kwa kujitegemea silaha zake zenyewe na kila kitu kinachohitajika kwa mashine yake ya vita, pamoja na vipuri. Hili haliwezi kufikiwa isipokuwa taifa likiwa na viwanda vizito na kuanza kujenga viwanda vinavyozalisha bidhaa za viwanda vizito, vya kijeshi na visivyo vya kijeshi sawasawa. Kwa hiyo ni lazima taifa liwe na viwanda vya kutengeneza aina zote za silaha za kinyuklia, roketi, satelaiti, ndege, matanki, vyombo vya angani, mizinga ya chokaa, meli za kivita, magari yenye silaha, na aina zote za silaha nzito na nyepesi. Ni lazima liwe na viwanda vinavyotengeneza mashine, injini, vifaa, vifaa vya kielektroniki, na viwanda vinavyohusiana na mali ya umma, pamoja na viwanda vidogo vinavyohusiana na jeshi au viwanda vya vita. Yote haya yanahitajika na wajibu wa maandalizi ambao Waislamu wanaulazimika nao kwa kauli ya Allah (S.W.T): .

It is quite clear in the world today that the States which sell weapons to other States do not usually sell every weapon, particularly the most developed weapons. They do not even sell weapons except with certain conditions that cover their utilisation. They will not sell them except in quantities that they, rather than the purchasing countries, decide. This gives the State which sells arms, authority and influence over the State which buys the arms enabling it to enforce its own will upon the purchasing State, particularly if it was involved in a war. In that case it would need more arms, spare parts, and ammunition, which would increase its dependence on the State which exports its arms and increases its submission to other states demands. This allows the State which exports arms to control it and its will, especially in times of war and in times of great need for arms and spare parts. Hence such a State would make itself, its will and its entity hostage to the State that exports arms to it. Therefore, for all these reasons, the State has to independently manufacture its own arms and everything it requires for its war machine and spare parts. This can’t be achieved unless the State possesses heavy industry and started to build factories which produce heavy industry, both military and non-military alike. Thus it is necessary that the State has factories for producing all types of atomic weapons, rockets, satellites, aeroplanes, tanks, spaceships, mortars, naval ships, armoured vehicles, and all types of heavy and light weapons. It is necessary that it has factories which produce machines, motors, materials, electronics and factories which have a relation with public property and light factories which have relation with the military or war industries. All this is required by the duty of preparation which is obliged upon the Muslims by the saying of Allah (S.W.T): .

"Waandaeni kwa ajili yao kila mnaloweza la nguvu (za kijeshi)." [TMQ 8:60]

“Make ready for them all that you can of (armed) force.” [TMQ 8:60] .

Kwa kuwa Dola ya Kiislamu inawasilisha ujumbe wa Uislamu kwa da'wah na Jihad, inapaswa kuwa Dola ambayo daima iko tayari kutekeleza Jihad. Hili linahitaji kuwepo kwa viwanda vizito na vyepesi vilivyojengwa juu ya msingi wa sera yake ya vita. Hivyo, endapo wakati wowote ingetaka kuviendesha viwanda hivi kwa madhumuni ya kijeshi, ingeweza kufanya hivyo kwa urahisi wakati wowote. Kwa hiyo, viwanda vyote katika Dola ya Khilafah vinapaswa kujengwa juu ya sera ya vita, na viwanda vyote vinavyozalisha bidhaa za viwanda vyepesi na vizito vinapaswa kujengwa juu ya sera hii, ili iwe rahisi kubadilisha uzalishaji wao kuwa uzalishaji wa kijeshi wakati wowote Dola inapohitaji.

Since the Islamic State conveys the message of Islam by da’wah and Jihad, it should be a State which should be continually ready to carry out Jihad. This requires the existence of heavy and light industry built upon the basis of its war policy. Thus in case it wanted at any time to transform these factories for military purposes, it would easily do so at any time. Therefore all the industry in the Khilafah State should be based on the war policy, and all the factories, which produce the light and heavy industries, should be based on this policy, so that it becomes easy to transform their production to military production at any time the State requires.