Rishi: Tradition associates such Soma/Pravargya formulas with Soma-liturgical strata; specific ṛṣi attribution uncertain without anukramaṇī cross-check.
Kindled is Agni; heated is the Gharma; wide-ruling is the pressed (Soma). Sarasvatī, the milch-cow, doth milk forth here the bright Soma, even Indra’s vigour.