Madhvaon Brahma Sūtra 3.1.18
Dvaita Vedānta
Numbered 3.1.19 in this text
Sūtra
न तृतीये तथोपलब्धेः
na tṛtīye tathopalabdheḥ
Sūtra translation
In the third (the lowermost region of the hell of Darkness) there is no (pleasure whatever), for it is seen to be such (from scripture).
Now he who is not wise or who has done no (good) works goes down; three different ways are there for (his) passage downwards into the bestial world, into the hell of torments, into the the hell of darkness. The first two are attended with some pleasurable sensations but the last (the hell of darkness) is not attended with any touch of pleasure; and here indeed there is but absolute pain.” From this Sruti, it is clearly seen that in the lowermost region of hell, there is no pleasure what- ever.