of Eid al-Adha, the major Muslim festival associated with the pilgrimage, the president defined scientific socialism as half practical work and half ideological belief. He declared that work and belief were compatible with Islam because the Qur'an condemned exploitation and money lending and urged compassion, unity, and cooperation among Muslims. But he stressed the distinction between religion as an ideological instrument for the manipulation of power and as a moral force. He condemned the antireligious attitude of Marxists. Religion, Siad Barre said, was an integral part of the Somali worldview, but it belonged in the private sphere, whereas scientific socialism dealt with material concerns such as poverty. Religious leaders should exercise their moral influence but refrain from interfering in political or economic matters. Religious orders always have played a significant role in Somali Islam. The rise of these orders (Tarika, "way" or "path") was connected with the development of Sufism, a mystical sect within Islam that began during the 9th and 10th centuries and reached its height during the 12th and 13th. In Somalia, Sufi orders appeared in towns during the 15th century and rapidly became a revitalizing force. Followers of Sufism seek a closer personal relationship to God through special spiritual disciplines. Escape from self is facilitated by poverty, seclusion, and other forms of self-denial. Members of Sufi orders are commonly called dervishes, from the Persian daraawish (singular darwish, "one who gave up worldly concerns to dedicate himself to the service of God and community"). Leaders of branches or congregations of these orders are given the Arabic title shaykh, a term usually reserved for those learned in Islam and rarely applied to ordinary wadaads (holy men). Dervishes wandered from place to place teaching. They are best known for their ceremonies, called dhikr, in which states of visionary ecstasy are induced by group- chanting of religious texts and by rhythmic gestures, dancing, and deep breathing. The object is to free oneself from the body and to be lifted into the presence of God. Dervishes have been important as founders of agricultural religious communities called jamaat (singular jamaa). A few of these were home to celibate men only, but usually the jamaat were inhabited by families. Most Somalis were nominal members of Sufi orders. Local leaders of brotherhoods customarily asked lineage heads in the areas where they wished to settle for permission to build their mosques and communities. A piece of