The Cycle of Tugas i - Verse 59-60

In order to check and control those men who commit sins in secret and (hence) are difficult to be subdued, and in order to establish righteousness on the earth, the divisions of *For vikridante in our text here, Bd. P. 1.2.29.54 reads vikriyante ‘undergo changes’ ( in every yaga ) . 402 Vayu Parana castes have been laid down in Treta Yuga. The compilations of Vedic texts, both Mantras and Brahmanas, have been made by the sages. 61. (The institution of) Yajha has been initiated by Devas, namely Yamas, Suklas and Japas all fully equipped with the requisites.