योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-83, verse-28

तस्मान्न द्वैतमस्तीह न चैक्यं न च शून्यता ।
न चेतनाचेतनं वै मौनमेव न तच्च वा ॥ २८ ॥

tasmānna dvaitamastīha na caikyaṃ na ca śūnyatā ,
na cetanācetanaṃ vai maunameva na tacca vā 28

28. Therefore there exists no duality nor unity, nor an empty vacuity either; there is neither an intelligence or its want or the both together; so is there neither my meism nor thy tuism either.