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.