▁Sun ni ▁Islam . ▁They ▁live ▁mainly ▁in ▁Western ▁Sah ara ▁but ▁also ▁in ▁Mor oc co ▁and ▁Maur it ania . ▁ ▁Orig ins ▁The ▁O ul ad ▁T id rar in ▁is ▁one ▁of ▁the ▁oldest ▁Arab ▁tribes ▁that ▁settled ▁the ▁S agu ia ▁el - H am ra ▁and ▁Río ▁de ▁O ro ▁areas ▁of ▁North west ▁Africa , ▁their ▁original ▁home . ▁Many ▁live ▁in ▁the ▁Cape ▁Bo j ador ▁and ▁the ▁coast line ▁of ▁the ▁south ▁of ▁Mor oc co , ▁some ▁on ▁the ▁coast ▁of ▁S agu ia ▁el - H am ra ▁and ▁some ▁branches ▁live ▁in ▁the ▁south ▁and ▁east ▁of ▁Maur it ania . ▁There ▁are ▁some ▁members ▁of ▁the ▁U lad sl iman ▁and ▁L idad sa ▁in ▁sub groups ▁in ▁M ali . ▁ ▁The ▁name ▁T id rar in ▁is ▁Ber ber ▁and ▁means ▁' small ▁mou int ains '. ▁It ▁is ▁the ▁dimin utive ▁form ▁of ▁id rar in . ▁i . e . ▁' mount ains '. ▁ ▁Relig ious ▁activ ism ▁The ▁tribe ▁has ▁established ▁cent res ▁for ▁the ▁spread ▁of ▁Islam ic ▁culture , ▁particularly ▁along ▁the ▁Atlantic ▁coast ▁region . ▁They ▁have ▁received ▁recognition ▁from ▁the ▁Mor oc can ▁s ult ans ▁for ▁their ▁work ▁in ▁this ▁area . ▁ ▁Cl an ▁sub div isions ▁O ul ad ▁T id rar in ▁can ▁be ▁divided ▁into ▁eleven ▁cl ans ▁and ▁twenty - three ▁sub cl ans . ▁The ▁cl ans ▁are : ▁▁ 1 . ▁lab