Atharva Veda 19.37: A charm to secure long life and dominion to a prince

To me hath come this word given by Agni, fame, force and might, and strength, and life, and lustre.
May Agni too bestow on me three-times a hundred manly powers.

For mighty strength, for action, I receive thee, for manly power, to last a hundred autumns.

For conquering strength and energy and vigour I fasten thee for chieftainship, for bearing royal dominion through a hundred autumns.

With Seasons and with Season-groups, for vigour and extended life.
With splendour of the perfect year we fasten thee about the neck.