Rubuta ci gaba ga wannan sakin layi - Charlemagne ya kira wani taro a Toulouse a cikin bazara na 800 wanda ya yarda ya aika da wani balaguro wanda ɗansa Louis the Pious ya jagoranci zuwa Barcelona. Sojojin sun hada da wasu sanannun kwamandoji da suka hada da Rostany, Count of Girona; Ademar, Count of Narbonne; da William na Gellone, Count of Toulouse (dan uwan Charlemagne). Koyaya, lokacin da ya isa Barcelona, Sa'dun, wanda a halin yanzu ya yi sulhu da Khalifanci, ya ƙi buɗe ƙofofin birni. Sojojin Frankish sun fara doguwar yaƙi
a cikin kaka na 800. Sa'dun ya yi ƙoƙarin tserewa don neman taimako daga Córdoba, amma sojojin da ke kewaye da shi suka kama shi. An maye gurbinsa a matsayin gwamna ta Harun na Barcelona, duk da haka kewaye ya yi nasara kuma Harun ya ba da birnin da jama'arta da ke fama da yunwa a ranar Asabar, 3 ga Afrilu, 801. Louis I ya shiga birnin a rana mai zuwa (Afrilu 4, 801). An kawo Sa'dun a gaban Charlemagne a lokacin rani na 801 kuma aka yanke masa hukuncin gudun hijira.