Yōga Sūtras
Yōga Sūtra 3.50
sattvapuruṣānyatākhyātimātrasya sarvabhāvādhiṣṭhātr̥tvaṁ sarvajñātr̥tvaṁ ca।
Such Sātvik soul by discerning the differences alone gets supremacy over all states of mind and the ability to understand everything.