 After the rule of al-Hasan's son Ahmad, the history of the Banu 'l-Ukhaidhir becomes obscure.When the traveler Nasir-i Khusraw arrived in al-Yamamah in 1051, the Banu 'l-Ukhaidhir were still ruling there, but at some point after this the Banu Kilab took over the country.After Ahmad, the list of rulers becomes uncertain, but later amirs were descendants of his son Abu 'l-Muqallid Ja'far.