MuU 2.2.3
धनुर्गृहीत्वौपनिषदं महास्त्रं शरं ह्युपासा निशितं सन्धयीत । आयम्य तद्भावगतेन चेतसा लक्ष्यं तदेवाक्षरं सोम्य विद्धि
dhanurgṛhītvaupaniṣadaṃ mahāstraṃ śaraṃ hyupāsā niśitaṃ sandhayīta | āyamya tadbhāvagatena cetasā lakṣyaṃ tadevākṣaraṃ somya viddhi
Sanskrit for this text is pending; the English follows the translator's numbering.
Having taken the Upanishad as the bow, as the great weapon, let him place on it the arrow, sharpened by devotion! Then having drawn it with a thought directed to that which is, hit the mark, O friend, viz. that which is the Indestructible!
Translated by F. Max Müller