Idara ya viwanda inasimamia mambo yote yanayohusiana na viwanda, iwe ni viwanda vizito kama vile utengenezaji wa injini, mitambo, magari, vifaa vya ujenzi, na vifaa vya umeme, au viwanda vyepesi. Viwanda hivyo viwe ni mali ya umma, au mali ya mtu binafsi yenye uhusiano na viwanda vya kijeshi, vyote lazima viwe kwa mujibu wa sera ya vita. Jihadi na mapigano yanahitaji jeshi. Ili jeshi liweze kupigana linahitaji silaha. Ili silaha hizi ziwe za kiwango cha juu na zipatikane kikamilifu, ni lazima kuwe na viwanda ndani ya dola. Kwa hiyo, viwanda vya kijeshi vina uhusiano mkubwa na Jihadi na vimeunganishwa nayo kwa karibu.

The department of industry controls all the affairs related to industry, whether they pertain to heavy industry like manufacturing of motors, engines, vehicles, materials, electrical equipment, or light industry. Whether those factories are public property, or individual property that has a relationship with military industries, all of them have to be based on the war policy. Jihad and fighting require an army. In order that the army can fight it requires weapons. In order that these weapons be of the highest level and fully available, it is necessary to have industry within the state. Therefore, the military industry has a strong relation with Jihad and is closely linked to it.

Ili dola iwe huru na isiathiriwe na nchi nyingine yoyote, inapaswa kutengeneza na kuendeleza silaha zake yenyewe. Hili linaifanya kuwa huru na kumiliki daima silaha za kisasa na zenye nguvu zaidi, bila kujali kiwango cha maendeleo na uboreshaji wa silaha. Pia ingekuwa na kila kitu inachohitaji katika silaha ili kuwatisha maadui wote wanaoonekana na wanaoweza kuwa maadui, kama Allah (SWT) asemavyo: {Waandalieni nguvu mlizo nazo na farasi wa mipakani, ili kwa hayo mtishe adui wa Allah na adui wenu, na wengine wasiokuwa wao ambao ninyi hamwajui. Allah anawajua.} [TMQ 8:60]

In order that the state is independent of other countries and not influenced by anyone of them, it should carry out the manufacture and development of 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 every apparent and potential enemy as Allah (swt) says; “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, ikitengeneza silaha inazohitaji na kuziendeleza daima ili kumiliki silaha zenye nguvu na zilizoendelea zaidi, ili kuwatisha maadui wote wa wazi na wa kuweza kuwa maadui. Kwa hiyo, ni wajibu kwa dola kutengeneza silaha yenyewe, na haiwezi kuruhusiwa 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 apparent and potential enemies. Therefore, it is a duty upon the state to manufacture weapons by itself and it is not allowed for her to depend upon other states, because this allows other states to control it, its will, its weapons and its fighting.

Mataifa yanayouza silaha kwa mataifa mengine hayauzi kila silaha kwa urahisi, hasa silaha zilizoendelea zaidi. Hayauzi silaha isipokuwa kwa masharti fulani yanayojumuisha matumizi yake. Hayatauza isipokuwa kwa idadi fulani ambayo yenyewe, si nchi zinazonunua, ndiyo inayoamua. Hili linaipa nchi inayouza silaha mamlaka na ushawishi juu ya nchi inayonunua silaha, na kuiwezesha kulazimisha mapenzi yake juu ya nchi inayonunua, hasa iwapo ilihusika katika vita. Katika hali hiyo, nchi hiyo ingehitaji silaha zaidi, vipuri, na risasi, jambo ambalo lingeongeza utegemezi wake kwa nchi inayouza silaha zake na kuhakikisha utii kwa madai yake. Hili linaiwezesha nchi inayouza silaha kuidhibiti na kudhibiti mapenzi yake, hasa wakati wa vita na wakati wa uhitaji mkubwa wa silaha na vipuri. Kwa hiyo, nchi kama hiyo ingejifanya, mapenzi yake na uhai wake kuwa mateka wa nchi inayouza silaha kwake.

The states that sell weapons to other states do not readily sell every weapon, particularly the most developed weapons. They do not sell weapons except with certain conditions that include their utilisation. They will not sell them except in certain quantities that they, rather than the purchasing countries, decide. This gives the state that sells arms, authority and influence over the state that buys the arms enabling it to enforce its own will on 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 that exports its arms and ensure submission to its 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.

Kwa sababu hizi zote, basi dola yenyewe lazima ijitengenezee silaha zake na kila kitu kinachohitajika kwa mashine yake ya vita na vipuri vyake. Hili haliwezi kufikiwa isipokuwa dola ikiwa na viwanda vizito, na ikaanza kujenga viwanda vinavyozalisha viwanda vizito, vya kijeshi na visivyo vya kijeshi pia. Hivyo ni lazima dola iwe na viwanda vya kutengeneza aina zote za mabomu ya atomiki, roketi, satelaiti, ndege, mizinga, vyombo vya angani, mizinga ya chokaa, meli za kivita, magari yenye silaha, na aina zote za silaha nzito na nyepesi. Ni lazima iwe na viwanda vinavyozalisha mashine, injini, vifaa, na vifaa vya kielektroniki, na viwanda vinavyohusiana na mali ya umma, pamoja na viwanda vepesi vinavyohusiana na jeshi au viwanda vya vita. Yote haya yanahitajika na wajibu wa maandalizi unaowalazimu Waislamu kwa kauli ya Allah (SWT):

Therefore, for all these reasons, the state has to carry out by itself the manufacture of its own arms and everything it requires for its war machine and spare parts. This can’t be achieved unless the state possessed heavy industry and started to build factories that produce heavy industry, both the military and the non-military alike. Thus it is necessary that the state has factories for producing all types of atomic bombs, rockets, satellites, aeroplanes, tanks, spacecraft, 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, and electronics and factories which have 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 that is obliged upon the Muslims by the saying of Allah (swt):

"Waandalieni kwa ajili yao kila mtakachoweza cha nguvu (za kijeshi)." [TMQ Al-Anfal: 60]

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

Kwa kuwa Dola ya Kiislamu huufikisha ujumbe wa Uislamu kwa njia ya Da'wa na Jihadi, ni lazima iwe dola inayokuwa daima tayari kutekeleza Jihadi. Hili linahitaji kuwepo kwa viwanda vizito na vyepesi vilivyojengwa juu ya msingi wa sera ya vita. Hii ni kwa sababu, wakati wowote inapohitajika kuvigeuza viwanda hivi kwa madhumuni ya kijeshi, jambo hilo hufanyika kwa urahisi. 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 kufuata sera hii, ili iwe rahisi kubadilisha uzalishaji wake kuwa uzalishaji wa kijeshi wakati wowote dola inapohitaji.

Since the Islamic state conveys the message of Islam by Da’wa and Jihad, it should be a state that should be continually ready to carry out Jihad. This requires the existence of heavy and light industry built upon the basis of war policy. This is because, at any time it requires to transform these factories for military purposes, it is easily done. Therefore, all the industry in the Khilafah state should be based on 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.