Mijina yana sha'awar Musulunci-yaya zan tallafa masa?

Assalamu alaikum, kowa. Ina bukatar shawara. Mijina (shekaru 42) ya yi ayyuka da yawa a Gabas ta Tsakiya a matsayin ma'aikacin lafiya. A lokacin da yake can, ya sami ƙauna mai zurfi da girmamawa ga al'ummar Musulmai kuma ya ji jan hankali sosai zuwa ga Musulunci. Yana da cikakken imani a cikin zuciyarsa cewa shi Musulmi ne. Yanzu yana son ya ziyarci masallaci kuma ya karbi Musulunci a hukumance-shin “shahada” ce yake bukatar ya faɗa? Ya fito daga asalin Hispanic kuma an rene shi a matsayin Katolika, amma yana jin kira na gaskiya zuwa ga Musulunci. Ni kaina ba mai addini ba ce, don haka ban san yadda zan fi tallafa masa ba. Menene ya kamata ya zama matakan farko nasa? Jazakum Allahu khair ga duk wani jagora.