Utengenezaji ni pale mtu anapomwomba mwingine amtengenezee chombo, gari au kitu chochote kilichomo katika viwanda. Mkataba wa utengenezaji unaruhusiwa na umethibitishwa katika Sunnah. Mjumbe wa Allah ﷺ aliomba kutengenezwa kwa pete ya kutia muhuri (pete inayotumika kwa muhuri au stempu). Anas alisema kuwa Mjumbe wa Allah ﷺ alitengeneza pete. Bukhari alipokea kutoka kwa Ibn Masoud aliyesema kuwa Mjumbe wa Allah ﷺ alitengeneza pete ya dhahabu. Mjumbe wa Allah ﷺ pia aliomba kutengenezwa kwa minbar (mimbari). Bukhari alipokea kutoka kwa Sahl kwamba Mjumbe wa Allah ﷺ alimtumia mwanamke mmoja na kusema: "Mwagize mtumishi wako, seremala, anitengenezee ubao wa kuketi." Bukhari alisimulia: "Watu walikuwa wakitengeneza vitu wakati wa Mjumbe wa Allah ﷺ, naye alinyamaza kuhusu jambo hili," kwa hiyo kimya chake na kitendo chake ni idhini yake ﷺ kuhusu utengenezaji. Idhini na kitendo cha Mjumbe wa Allah ﷺ ni dalili za kimungu kama maneno yake. Jambo lililokubaliwa kwa utengenezaji ni kitu kilichotengenezwa kama pete ya muhuri, mimbari, kabati, gari na kadhalika. Kwa mtazamo huu, utengenezaji ni aina ya uuzaji wala si ukodishaji. Hata hivyo, ikiwa mtu atampelekea mtengenezaji malighafi na kumwomba atengeneze kitu fulani, basi hii ni aina ya ukodishaji.

Manufacturing is where a person requests another to manufacture for Him a vessel, a car or anything that is included in industry. Contracting manufacturing is allowed and proved in the Sunnah. The Messenger of Allah (pbuh) requested the manufacture of a seal (the ring used for a seal or a stamp). Anas said that the Messenger of Allah (pbuh) manufactured a ring. Bukhari reported from Ibn Masoud who said that the Messenger of Allah (pbuh) manufactured a ring of gold. The Messenger of Allah (pbuh) also requested the manufacture of the minbar (pulpit). Bukhari reported that Sahl said that the Messenger of Allah (pbuh) sent to a woman to and said: “Order your servant, the carpenter, to make me some board to sit on.” Bukhari narrated: “People used to manufacture at the time of the Messenger of Allah (pbuh), and He kept silent about this,” so his silence and action is his (pbuh) agreement regarding manufacturing. The agreement and the action of the Messenger of Allah (pbuh) are divine evidences like his sayings. The matter contracted for manufacturing is the manufactured thing such as the seal, pulpit, cupboard, car and the like. From this angle, manufacturing is a form of selling not hiring. However, if someone were to bring the raw material to the manufacturer and ask Him to manufacture a particular thing, then this would be a form of hiring.