kim — what use; kāvyena — with poetry; kaveḥ — of the poet; tasya — that; kim — what use; kāṇḍena — with the arrow; dhanuḥ-mataḥ — of the bowman; parasya — of another; hṛdaye — in the heart; lagnam — penetrating; na ghūrṇayati — does not cause to roll about; yat — which; śiraḥ — the head.