The Mukhya Upaniṣads

Maitrī · Prapāṭhaka 2 · Maitrī 2.1

Passage 11

स वा एष शुद्धः स्थिरोऽचलश्चालेपोऽव्यग्रो निःस्पृहः प्रेक्षकवदवस्थितः स्वस्य चरितभुग्गुणमयेन पटेनात्मानमन्तर्धीयावस्थित इत्यवस्थित इति ॥२.११ ॥

In plain words

This one is pure, firm, unmoving, unstained, unagitated, without longing, standing as a spectator, and enjoying what it has itself done; it stands veiling itself with a cloth made of the strands — so it stands, so it stands.