Akwai wasu Musulmi da ke ba da shawarar cewa ya kamata harkar Musulunci ta zama ta duniya baki ɗaya, saboda Musulunci addini ne na duniya, kuma an aiko Muhammad ﷺ zuwa ga ɗan Adam gaba ɗaya. Baya ga haka, a zahiri harkar Musulunci tana fuskantar harkokin duniya baki ɗaya. Haka kuma girman ayyukan da canjin Musulunci ke buƙata yana sa wajibcin zama ta duniya baki ɗaya.

There are some Muslims who suggest that the Islamic movement should be universal, because Islam is a universal deen, and Muhammad 􀁕 was sent to the whole of mankind. Besides that, in reality the Islamic movement faces universal movements. Moreover the enormity of the tasks required by the Islamic change imposes the need for universality.

Mutanen da suke riƙe da wannan ra'ayi suna kawo hujjojin Alƙur'ani masu zuwa: "Kamar haka muka sanya ku al'umma mai adalci, domin ku zama shaidu a kan mutane, Manzon kuma ya zama shaida a kanku." [TMQ 2:143]. Kuma "Ka ce: (Ya Muhammadu ﷺ): 'Ya ku mutane! Lalle ni Manzon Allah ne zuwa gare ku baki ɗaya.'" []. Kuma "Ba mu aiko ka ba (ya Muhammadu ﷺ) sai dai mai bushara da mai gargaɗi ga dukkan mutane, amma mafi yawan mutane ba su sani ba." []. Don haka mun ga Manzon ﷺ ya miƙa da'awarsa zuwa ga duniya baki ɗaya, zuwa ga kowace ƙasa, sansani ko sarki. Saboda haka ya rubuta wa Najashi (Sarkin Habasha), Heraclius (sarkin Rum), da Muqawqis (sarkin Larabawan Kibɗawa)