योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-167, verse-28

अन्तःसंवेदनं भाति स्वं बाह्यार्थतया यतः ।
क्व द्वैतं क्व च वार्थश्रीः स्मृतिरेवमतः कुतः ॥ २८ ॥

antaḥsaṃvedanaṃ bhāti svaṃ bāhyārthatayā yataḥ ,
kva dvaitaṃ kva ca vārthaśrīḥ smṛtirevamataḥ kutaḥ 28

28. It is the inward consciousness, that exhibits its inner concepts as outward objects; how then is there a duality or anything objective, and what means this remembrance of extraneous matter.