Patanjali Yog Sutra
वृत्तिसारूप्यमितरत्र II१-४II
At other times, when not in the state of yoga the seer is identified with the modification(Vrittis) of Chitta( mind stuff).
english translation
दूसरे समय में अर्थात् जब चित्त वृत्ति का निरोध न हुआ तब द्रष्टा (पुरुष या आत्मा)का वृत्ति के अनुसार स्वरूप होता है ।
hindi translation
vRttisArUpyamitaratra II1-4II
hk transliteration by Sanscript