concile themselves to the loss of Syria's privileged position, nor to their exclusion from government offices. In the case of the Christians the situation was aggravated by unfair extortion and increased taxation. Al-Mansur's son and suc- cessor al-Mahdi (775-785) forced 5000 Tanukh Arabians around Aleppo to adopt Islam and had their churches demolished. After the brief reign of al-Mahdi's elder son al-Hadi, the caliphate passed to his younger son Harun al- Rashid (786-809), extolled in Moslem legend but a harsh master to Syrian Christians and Moslems alike.
In 782, while still a prince, Harun had led his forces as as far as Byzantium and exacted from the regent Irene a heavy tribute. As caliph he conducted from his favourite residence al-Raqqah in northern Syria a series of raids into the land of the Romans. Dissension between North Arabians (Qays) and South Arabians (Yaman) split Syria in his time, with official favour accorded to the Qaysites in the bitter strife. For two years the district of Damascus was the scene of relentless warfare, but in 795 Harun en- trusted a punitive expedition to a Barmakid general who completely disarmed both factions. The Barmakids, a Persian vizirial family exalted by al-Mansur, achieved such distinction and displayed such generosity in the use of their immense wealth that by 803 Harun was no longer able to tolerate their prestige; he annihilated them and con- fiscated their property.
Harun re-enacted some of the anti-Christian and anti- Jewish measures introduced by Umar II. In 807 he ordered all churches erected since the Moslem conquest demolished. He also decreed that members of tolerated sects should wear the prescribed garb. But evidently much of this legislation was not enforced. His death led to a struggle for the throne between his sons al-Amin (809-813) and al-Mamun (813- 833); the accompanying convulsions had repercussions in Syria. Syrian troops deserted wholesale, or followed an Umayyad pretender who held Horns and Damascus briefly.
