योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-40, verse-7

त्वमेव पश्यसि त्वन्त्वं सत्त्वं शब्दार्थजृम्भितम् ।
पश्यामि शान्तमेवाहं केवलं परमं नभः ॥ ७ ॥

tvameva paśyasi tvantvaṃ sattvaṃ śabdārthajṛmbhitam ,
paśyāmi śāntamevāhaṃ kevalaṃ paramaṃ nabhaḥ 7

7. You behold me as another person, and address me with words thou &c. in the second person; but I find myself as calm and quiet as the transcendent vacuum itself.