Nyora kupfuurira kweiyi ndima - Munguva yehondo yevagari vemo pakati pe
vaKhalifa vaipikisa Al-Amin (r. 809<unk>813) uye al-Ma'mun (r. 813<unk>833), Yazid akagadzwa gavhuna weYemen naAl-Ma'mun mukuru Tahir ibn al-Husayn, aine rairo yekuunza dunhu iri pasi pekutonga kwaAl-Ma'mun. Naizvozvo akaenda kuYemen aine boka guru revatasvi vemabhiza, uye paakasvika akaudza vaYemeni kuti vasiye al-Amin uye vapike kuti vachatsigira al-Ma'mun. Akakurumidza kupinda mumatambudziko, zvisinei, nemutemo wake wekutsigira maQahtanite maArabu epurovhinzi pamutengo we "abna" yemuno, waakabata nenzira yakaoma kwazvo. Nokukurumidza pashure porufu rwaal-Amin muna 813, shoko rokubatwa zvisina kufanira kwaYazid kwe"abna" rakasvika kuna al-Ma'mun, uyo akapindura nokumubvisa pakuva gavhuna. Achitevera kudzingwa kwake, akasungwa muSana'a nemutsivi wake Umar ibn Ibrahim ibn Waqid al-Umari ndokukanikwa mutirongo.