Mahabharata 13.135.15

पूतात्मा परमात्मा च मुक्तानां परमा गतिःअव्ययः पुरुषः साक्षी क्षेत्रज्ञोऽक्षर एव च

pūtātmā paramātmā ca muktānāṃ paramā gatiḥavyayaḥ puruṣaḥ sākṣī kṣetrajño'kṣara eva ca

Our plain-language meaning of this verse is waiting for scholar review.