Ali na IV na Bornu

Ali IV (ʿ bin Ḥamdūn  ko ʿ Bin al-Ḥājj Dunama)  shi ne mai mulkin Kanem-Bornu a cikin 1750-1791. 

Ali IV ya gaji Dunama VIII Gana a matsayin Mayu a shekara ta 1750.  Shi ɗan mai Hamdan ne  (r. 1726-1731),  wanda kuma ake kira Dunama a Mayu tushe.

An lura da mulkin Ali don rikice-rikice da yawa tare da Masarautar Mandara a kudu maso yammacin Bornu. Mandara da ƙasashen arna da ke kewaye da shi suna da kyau a matsayin yanki don hare-haren bayi. Ali ya kaddamar da kamfen da yawa a kan Mandara. Yawancin yaƙe-yaƙe ba su yi nasara ba; a daya daga cikin yaƙe- yaƙe-yanayin Ali da kansa ya ji rauni kuma yawancin sojojinsa sun mutu. A shekara ta 1781, sojojin Mandara sun mamaye Bornu kanta kuma sun kashe yawancin sojojinta. Rashin nasarar Ali ya raunana Daular Kanem-Bornu sosai kuma ya sa ta fi fuskantar hadin gwiwar Fula, wanda zai mamaye yankin 'yan shekarun da suka gabata bayan mutuwar Ali.

Wani lokaci a lokacin mulkinsa, Ali ya kasance kusa da masanin Fulani Sheikh Muhammad al-Tahir (wanda aka fi sani da Dahiru Feroma). Lokacin da al-Tahir ya isa babban birnin Bornu Gazargamu, an ce wani masanin da ake girmamawa Shehu Ajirami (Muhammad bin al-Hajj Abd al-Rahman : 39) "kada ya ba da kansa a ofisoshin daular kamar imam, alkali, ko majalisa" 

Duk da karɓar shawarar Ajirami, al-Tahir ya zama babban aboki na mai Ali, wanda aka ruwaito ya haifar da kishi tsakanin sauran ma'aikatan kotu. Akwai labaru da yawa game da wannan kishi. A cikin wani labarin, al-Tahir ya kare wani mutumin da mai ya kama amma lokacin da Ali ya ki ya sake shi, mutumin ya ɓace. Jami'in kotun Shettima Magaramma ya zargi al-Tahir da yin amfani da sihiri don fitar da mutumin a cikin katako. Al-Tahir ya amsa da aya: 



Rubuce-rubucen Al-Tahir sun nuna cewa ya shawarci Ali kan al'amuran addini, ya ƙarfafa shi a cikin yakin basasa, kuma ya rubuta masa yabo a matsayin Musulmi mai ibada. Ɗaya daga cikin shahararrun ayyukansa shine waka da ya rubuta don mai da ake kira Fané Fané ("Ku saurara, Ku saurara" a Kanuri), wani nuni ne ga yada jita-jita. A ciki, al-Tahir ya yi Allah wadai da wasu ma'aikatan da ba a ambaci sunansu ba saboda tsegumi da jita-jita. 

A cikin karni na 19 na Jihad na Sokoto, an yi amfani da Fané Fané a matsayin hujja ga jihadi a Bornu ta kwamandan jihadi kuma mai ilimi Muhammed Bello. Bello ya fassara waka a matsayin shaida cewa al-Tahir masanin da aka zalunta ne wanda ya fuskanci matsaloli a kotu sakamakon kare Islama daga wani mai zalunci marar imani. Koyaya, masanin tarihi Louis Brenner ya yi jayayya cewa wannan karatun ya ɓata waƙar. Maimakon haka, ya lura cewa karantawa mai zurfi zai ba da shawarar wani fassarar: "na masanin addini wanda ke da alaƙa da siyasa ta kotu. "A cewar Brenner, al-Tahir koyaushe yana kallon Ali a matsayin mai mulkin musulmi, kuma yawancin waƙoƙinsa an rubuta su "don tallafawa manufofi da mutumin Mai Ali" 

Ali ya gaji dansa Ahmad  a shekara ta 1791. 

 Manazarta