Bahilah

Bāhila (Arabic: باهلة) was an Arab tribe based in Najd (central Arabia). Part of the tribe was settled and part of it was semi-nomadic. The Bahila was first mentioned during the early years of Islam, in the mid-7th century. During that time, many Bahila tribesmen migrated to Syria and Basra. Many of those who went to Syria later moved to Khurasan as part of the Umayyad garrison there. As a sub-tribe of Qays, they fought alongside the Qaysi coalition against the Yamani tribes during the Umayyad era. The scholar al-Asma'i and the general Qutayba ibn Muslim both belonged to the tribe. The Bahila were last mentioned in the 10th century.

According to W. Caskel, the genealogy of the Bahila "is somewhat complicated". The namesake of the tribe, Bahila, was a wife of Malik ibn A'sur ibn Sa'd ibn Qays, and after the latter's death, was married to Malik's brother Ma'n. The Qutayba and Wa'il were the largest sub-tribes of the Bahila and both were engaged in a rivalry for supremacy over the Bahila.

The Bahila's original homeland was called Sūd Bāhila or Sawād Bāhila. Around that time, the Bahila's Arabian territories were largely overrun by the Banu Numayr, a sub-tribe of the Banu 'Amir. The Bahila migrants entered the lower Euphrates region, first in the vicinity of al-Hufayr near Basra and from there into the sandy al-Taff tract on the southern border of the Bata'ih marshes. After 837, these Bahila tribesmen settled in the Bata'ih itself, where in 871 they were attacked by Abbasid troops on their way to suppress the Zanj Rebellion. Consequently, the Bahila allied with the Zanj. Afterward nothing is heard of the Bahila.