In most Sufi orders, a dervish is known to practice dhikr through physical exertions or religious practices to attain the ecstatic trance to reach God. Their most popular practice is Sama, which is associated with the 13th-century mystic Rumi. In folklore and with adherents of Sufism, dervishes are often credited with the ability to perform miracles and ascribed supernatural powers. Historically, the term Dervish has also been used more loosely, as the designation of various Islamic political movements or military entities.