The immediate response of emir Muhammad was to try to limit the expansion of the Banu Qasi by installing a rival dynasty, the Arab Banu Tujibi, in Calatayud, the one part of their father's possessions not reclaimed.
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Muhammad ibn Lubb tested his power against the new emirs, and they responded by again trying to balance Banu Qasi power in the region, giving Zaragoza to the rival Tujibids, and Huesca to Muhammad ibn Abd al-Malik al-Tawil of the Muladi Banu Shabrit clan.
Banu Khazraj | Banu Sulaym | Banu Hud | Banu Hashim | Saira Banu | Banu Hilal | Banu Tujibi | Banu Aus | Hamida Banu Begum | Banu Salama | Banu Ghaniya | Musa ibn Musa ibn Qasi | Banu Ukhaidhir | Banu Qasi | Banu Onaral | Banu Nadir | Banu Kalb | Banu |
He is also the author of the family histories of the Banu Qasi, Banu Sabrit, and Banu Tujibi, which are now lost, but were cited by al-Maqqari.
While always nominally a vassal of Córdoba, the rebellious, semi-autonomous actions of the Banu al-Tawil along with those of their rivals the Banu Qasi set the stage for their Banu Tujibi and Banu Hud successors, to establish a fully independent taifa state in what had been the Upper March of the Caliphate.
Musa ibn Musa ibn Qasi (c. 790–862), leader of Banu Qasi in modern Northern Spain