The Religion and Philosophy of the Veda and Upanishads v2.c40.s1.5

v2.c40.s1.5

³ Deussen, *Sechzig Upanishad's*, p. 7, following the Indian (Āruṇeya Up. 2) tradition of an Āraṇyaka as a Brāhmaṇa for those engaged in the vow of forest life (Sāyaṇa on AA. i. 1; Aufrecht, *Aitareya Brāhmaṇa*, p. iii). The other view is, however, also traditional. Winternitz (*Gesch. d. ind. Lit.* i. 202, n. 1) agreed with Deussen but (iii. 616) with Oldenberg. Oltramare (*L'histoire des idées théosophiques*, i. 63, n. 1) suggests 'introduction' or 'initiation', hence mystic doctrine.