अनन्दा नाम ते लोका अन्धेन तमसावृताः ।तांस्ते प्रेत्याभिगच्छत्यविद्वांसोऽबुधा जनाः ॥४,४.११ ॥
In plain words
Joyless are those worlds, covered over with blind darkness; to them, after death, go those who are without knowledge and unawakened.
The commentators
Bṛhadāraṇyakopaniṣadbhāṣyam· avatāraṇikā
यदि ते अदर्शनलक्षणं तमः प्रविशन्ति, को दोष इत्यु-
In plain words
If they simply enter a darkness that is only the absence of sight, what is wrong with that? — so the objection goes …
Close to the Sanskrit
If they enter darkness characterized by non-perception, what fault [is there in that]? — thus …