The third part has wide-ranged topics in Rig Veda and associated Mantras. Here you can access Rigveda text in various formats including devanagari and Roman transliterated fonts, PDF, postscript, with and without vedic svaras (accents.). A number of other commentaries (bhāṣyas) were written during the medieval period, including the commentaries by Skandasvamin (pre-Sayana, roughly of the Gupta period), Udgitha (pre-Sayana), Venkata-Madhava (pre-Sayana, c. 10th to 12th centuries) and Mudgala Purana (after Sayana, an abbreviated version of Sayana's commentary). son of Itara), also mentioned elsewhere as a philosopher; and it seems likely enough that this person arranged the Brahmana and founded the school of the Aitareyins. It is one of the four sacred canonical texts (śruti) of Hinduism known as the Vedas .