Madhvaon Brahma Sūtra 3.1.13

When they have undergone punishment dealt out by Varna in hell, some ascend, some descend (lower down) The particle 1 Tu * in the Sutra has an emphatic force (is used to add emphasis). This is distinctly said in the Kauntharavya Sruti, “ All these indeed, who omit to do what is good as well as those who do what is bad go down to Yama in the purgatory; there, those that hate the Lord, the preceptors (elders) (and) Srutis, or scorn them, all those who are perfidious, obstinate, and perverse, all these descend lower still and fall into the hell of Dark- ness ; and these never rise out of it; indeed they call that the pit of absolute misery. Now those who hate Brâh- mans, who are thieves or drunkards, having undergone the punishment in the purgatory come back to this world.”