The Tayy made their abode in Transjordan and the Bilad al-Sharat mountains between Transjordan and the Hejaz. Here they first received attention in 883 when they launched a revolt that spanned southern Syria and the northern Hejaz. The Tayy's revolt prevented the passage of the annual Hajj caravan from Damascus to Mecca until it was quashed by the Tulunid ruler Khumarawayh (884–896) in 885. For the remainder of Khumarawayh's reign, the Tayy remained suppressed, possibly due to the help of older-established Arab tribes like the Judham and Lakhm. However, law and order once again broke down during the reigns of Khumarawayh's successors Jaysh and Harun between 896 and 904. This coincided with the rising strength of the anarchist Qarmatian movement in eastern Arabia and southern Iraq. The Tayy associated themselves with the Qarmatians to establish their dominance of southern Syria; with likely Qarmatian encouragement, the Tayy launched a revolt between Syria and the Hejaz in 898, during which they plundered caravans and disrupted lines of communication.