Great rapture filled Śatrughna’s breast, Obedient to his brother’s hest. “Send forth ten thousand men” he cried, “Let brawny arms be stoutly plied, And, smoothing all with skilful care, The road for Kośal’s king prepare.

In plain words: Shatrughna happily obeys his brother. He orders ten thousand men to work hard and smooth the road for Rama, the king of Koshala.