The Reguibat (also Reguibate, Rguibat, R'gaybat, R'gibat, Erguibat, Ergaybat) is a Sahrawi Tuareg tribe of Sanhadja-Berber origins,that absorbed a number of tribes of Arab origin. The Reguibat speak Hassaniya Arabic, and are Arabized in culture. They claim descent from Sidi Ahmed al-Rgibi, who lived in the Saguia el-Hamra region in the 16th century. They also believe that they are, through him, a chorfa tribe, i.e. descendants of Muhammad. Religiously, they belong to the Maliki school of Sunni Islam.