Rubuta ci gaba ga wannan sakin layi - Idrisids sun juya ga Ibn Saud suna neman kariya daga Yahya. A shekara ta 1932, duk da haka, Idrisids sun karya yarjejeniyarsu da Ibn Saud kuma sun koma Imam Yahya suna neman taimako a kan Ibn Saud da kansa, wanda ya fara kawar da ikonsu kuma ya nuna sha'awarsa ta haɗa waɗannan yankuna a cikin masarautar Saudiyya. Imam Yahya ya bukaci a dawo da dukkan mulkin Idrisi. A wannan shekarar, wasu 'yan adawa na Hejazi sun gudu zuwa Yemen kuma sun shirya don korar Ibn Saud daga tsohuwar Masarautar Hashemite ta Hejaz wacce Saudiyya ta ci nasara
shekaru bakwai da suka gabata. Ibn Saud ya yi kira ga Birtaniya don taimako. Gwamnatin Biritaniya ta aika da makamai da jiragen sama. 'Yan Birtaniya sun damu da cewa matsalolin kudi na Ibn Saud na iya ƙarfafa daular Italiya don ceton shi. Ibn Saud ya murkushe tawayen Asiri a 1933, bayan haka Idrisids suka gudu zuwa Sana'a. Tattaunawa tsakanin Imam Yahya da Ibn Saud sun kasance marasa amfani. Bayan wani rikici na soja, Ibn Saud ya sanar da tsagaita wuta a watan Mayu 1934. Imam Yahya ya amince ya saki 'yan gudun hijirar Saudiyya da kuma mika Idrisis ga kulawar Saudiyya. Imam Yahya ya ba da larduna uku na Najran, Asir da Jazan na tsawon shekaru 20 kuma ya sanya hannu kan wata yarjejeniya tare da gwamnatin Burtaniya a 1934. Imam ya yarda da ikon mallakar Burtaniya akan Aden mai kariya na shekaru 40. Yahya ya mika wuya ga bukatun Saudiyya da na Burtaniya saboda tsoron Al Hudaydah. A cewar Bernard Reich, Farfesa na Kimiyyar Siyasa da Harkokin Kasashen Duniya a Jami'ar George Washington, Yahya zai iya yin mafi kyau ta hanyar sake tsara kabilun Zaidi na arewacin tsaunuka kamar yadda kakanninsa suka yi a kan Turkawa da 'yan Birtaniya masu kutse da kuma juya ƙasashen da suka kama a cikin wani kabari.