The works of Ādi Śaṅkarācārya

Muṇḍakopaniṣadbhāṣyam

Verse 8

दिव्यो ह्यमूर्तः पुरुषःसबाह्याभ्यन्तरो ह्यजः ।अप्राणो ह्यमनाः शुभ्रोह्यक्षरात्परतः' परः ॥ २ ॥

In plain words

Self-luminous, formless, encompassing both inside and outside, unborn, free from breath and mind, radiant, that Purusha is supreme, transcending even the higher Imperishable.

Close to the Sanskrit

Divine is indeed formless the Purusha, with outside and inside, indeed unborn, breathless, indeed mindless, radiant, indeed higher than the higher imperishable.