चित्तं चित्तादुपागम्य मुनिरासीत संयतः ।
यच्चित्तस्तन्मयोऽवश्यं गुह्यमेतत्सनातनम् ॥
cittaṁ cittād upāgamya munir āsīta saṁyataḥ |
yac cittas tanmayo’vaśyaṁ guhyam etat sanātanam ||
(Mahābhārata: 14.51.27)
“Returning from the mind (citta) to the mind [i.e., focusing one’s awareness], a sage should sit restrained. As is the mind, so one inevitably becomes. This is the eternal secret.”