[2] In 1016, Sinan and Mufarrij led their respective tribesmen again in service to the Fatimids, this time under directions from Caliph al-Hakim (r. 996–1021), against the rebel commander of Aleppo, Fath al-Qal'i, and the Banu Kilab chief Salih ibn Mirdas.
Sinan's Kalbites were early on backed by 3,000 warriors under Salih ibn Mirdas, and later, after the Tayy's sack of Ramla, by even more Bedouin horsemen.
[7] Although the arrival of Kilab and Tayy reinforcements further strained the defenders' abilities, the Damascenes under Ibn Abi'l-Jinn refused to accept Sinan's offer to relieve the siege for a 30,000-dinar payment, fearing such an agreement would not be honored by the Bedouin.
The Bedouins focused mainly on looting grain stocks and suffered heavy casualties, with the Kalb losing some two hundred men and Sinan being wounded by an arrow.
[7] By early 1025, the Damascenes had repulsed Sinan, who appears to have abandoned his designs to take the city, as his Tayy and Kilab counterparts had seized their targets, Ramla and Aleppo, respectively.
He played a leading role in the subsequent rout of the Tayy and Kilab by the Fatimid general Anushtakin al-Dizbari at the Battle of al-Uqhuwana in 1029.
[9] In 1069, Sinan's son Mismar, by then a leader of the Kalb, led an abortive siege of Damascus in support of a local faction poised against its Fatimid garrison.