KENA UPANISHAD · 4/5
अथाध्यात्मं यदेतद्गच्छतीव च मनोऽनेन चैतदुपस्मरत्यभीक्ष्णं संकल्पः ॥
athādhyātmaṃ yadetadgacchatīva ca mano’nena caitadupasmaratyabhīkṣṇaṃ saṃkalpaḥ ॥
Then in that which is of the Self,—as the motion of this mind seems to attain to That and by it afterwards the will in the thought continually remembers It.
Sri Aurobindo · CWSA 18, p. 11