page 374 note 1 The fullest account of the movements of Khâlid and Sahl is found in al-Tabarî, Ta'rîkh al-rûsul wal-mulûk, Husayniyya edition, X, 241–3, 248–9.Google ScholarAbbreviated accounts with occasional supplementary detail may be found in Athîr, Ibn al, al-Kâmil fîl- Ta'rîkh Cairo, 1357 A.H.), V, 182–3, 191;Google Scholar‘Uyûn al-Hadâ'iq fî Akhbâr al-Haqâ'iq, de Goeje, M. J. and de Jong, P., eds. (Leiden, 1869), pp. 352–3 – an account that stresses the connections between the ayyârûn and the army;Google ScholarMiskawayh, Tajârib al-Umum, de Goeje, M. J. and de Jong, P., eds. (Leiden, 1869), pp. 433–5, 440–1;Google ScholarKathîr, Ibn, al-Bidâya wal-nihâya (Cairo), x, 248;Google Scholaral-Mas'ûdî, , Murûj al-Dhahab (Cairo, 1958), IV, 29, points out that the volunteers, the mutawwi'a, were the chiefs of the common people and of their followers. Al-Ya'qûdî says that al-Ma'mûn ‘also gave amnesty to Sahl b. Salâma al-Mutawwi'î who used to clothe himself in a woollen garment, drape a copy of the Qur'ân about his neck, and urge the people to depose al-Ma'mûn; but no one ever paid any attention to him’. Or so al-Ya'qûbî might have wished.Google Scholar See Millward, W., ‘The Adaptation of Men to Their Time: An Historical Essay by al-Ya'qûbî’, Journal of the American Oriental Society, 84 (1964), 329–44.10.2307/596772CrossRefGoogle ScholarFor events in general, the main source is al-Tabarî, Ta'rîkh, years 198–204; Miskawayh gives valuable details about the ‘Alid—'Abbâsid feud, pp. 424–5. See also Ibn al Athîr and ‘Uyiûn al-Hadâ'iq for the same years. Muttalib had a long history of changes of political heart. He was, as al-Ma'mûn is reputed to have remarked, the first and the last to be involved in every political dispute. As governor of Mosul in 809–10 Muttalib supported al-Ma'mûn rather than al-Amîn, who had appointed him. Between 813 and 816 he held two short terms as governor of Egypt, during the second of which he was driven from the country by the outbreak of civil war. In Baghdad he declared support for Sahl although this proved to be only a holding action for al-Ma'mûn, but he would soon oppose al-Ma'mûn by temporarily supporting the anti-Caliph Ibrâhîm ibn al-Mahdî before returning once again to his original allegiance.Google Scholar See al-Kindî, , al-Wulât wal-Qudât (Leiden, 1912), pp. 152–61;Google Scholaral-Azdî, , Ta'rîkh Mawsil (Cairo, 1967), pp. 325, 342;Google ScholarTayfûr, Ibn, Ta'rîkh Baghdâd (Baghdad, 1968), p. 32;Google ScholarGabrieli, Al-Ma'mûn e gli 'Alîdi, p.49;Google ScholarTaghrîbirdî, Ibn, al-Nujûm at-Zâhira (Cairo), II, 157, 162–3.Google Scholar