The Sanskrit phrase meaning ‘hall-dwellers’ is used for a Śvetāmbara movement that opposes the worship of images and the building of temples. The term Sthānaka-vāsī, whose origin remains unclear, came into widespread use in the early 20th century. The movement’s roots can be traced to the 15th-century reform movement initiated by Loṅkā Śāh, from which the founders of the Sthānaka-vāsī traditions separated in the 17th century. Sthānaka-vāsīns practise mental worship through meditation. The lay members venerate living ascetics, who are recognisable from the mouth-cloth – muhpattī – they wear constantly.