प्रणवो धनुः शारो ह्यात्मा ब्रह्म तल्लक्ष्यमुच्यते । अप्रमत्तेन वेद्धव्यं शरवत् तन्मयो भवेत् ॥ ४॥

Om is the bow; the atman is the arrow; Brahman is said to be the mark. It is to be struck by an undistracted mind. Then the atman becomes one with Brahman, as the arrow with the target.