Jagadguru (Sanskrit जगद्गुरु), literally meaning the Guru of the world, is a title used in Sanatana Dharma. Traditionally, it has been bestowed upon or used for belonging to the school (among the six traditional schools of thought in Hinduism) who have written Sanskrit commentaries on the (literally the three sources) - the (the original scripture of Vedānta), the (part of the ) and the principal Upanishads. Historically, Jagadgurus have established a lineage , established an institution to spread Dharma, who have been based in Varanasi, famous for being the centre of Sanskrit study and the "Capital Of all Knowledge".