A western Indian Vaiṣṇava householder bhakti movement, based on the Śuddhādvaita theology developed by Vallabha. Its devotional practice is characterized as the Puṣṭimārga, since soteriological progress and, eventually, liberation, is dependent at every level, on the grace (puṣṭi) of Kṛṣṇa—especially of Kṛṣṇa as Śrī Nāthjī, his svarūpa (‘own form’) installed at Nāthdvāra in Rajasthan. The sampradāya was developed by Vallabha's second son, Viṭṭalanātha, who assigned a further Kṛṣṇa image to each of his seven sons, to be installed in separate North or West Indian temples. In this way he established, through his male line, a householder guru lineage for the sampradāya. Viṭṭalanātha is also credited with establishing a liturgy composed of the kīrtanas of eight bhakti poets (aṣṭachāp(a) for use during service (sevā) of the deity. See also Puṣṭimārga; Śuddhādvaita.