The mystical strand of Islam that reached India from about the 11th to 12th centuries, emphasising love of God, personal experience, music (sama), and tolerance over rigid orthodoxy.
Order-to-saint matching (Chishti, Moinuddin Chishti at Ajmer, Nizamuddin Auliya), the khanqah-pir-murid vocabulary, and Amir Khusrau are standard medieval-culture facts.
Chishti versus Suhrawardi orders; Sufi (Islamic mysticism) parallels but is distinct from the Bhakti movement (Hindu devotion), though both stressed love over ritual.
Islamic mystical movement of orders (Chishti, Suhrawardi) stressing love of God, music, and Hindu-Muslim harmony.