Analysis of information sources in references of the Wikipedia article "Caliphate of Córdoba" in English language version.
[Emir Abdullah died on] 16 Oct., 912 after 26 years of inglorious rule leaving his fragmented and bankrupt kingdom to his grandson 'Abd ar-Rahman. The following day, the new sultan received the oath of allegiance at a ceremony held in the "Perfect salon" (al-majils al-kamil) of the Alcazar.
The Bayt al-Ḥikmah ("House of Wisdom"), founded in AD 830 in Baghdad, contained a public library with a large collection of materials on a wide range of subjects, and the 10th-century library of Caliph al-Ḥakam in Cordova, Spain, boasted more than 400,000 books.