Armor, shield, sword, bow & arrow Brahmastra and other powers are necessary for that warrior who has reached the battlefield for war. In the same way, a person who is moving on the path of liberation who has become assiduous to destroy karmas with detachment, and is ready for war with self, above mentioned means are necessary for him. Detachment is a strong chariot, right perception is the armor, right knowledge is the shield, self-restraint or right conduct is the sword which destroys the karmas. Both types of penance is bow and arrow. To get engrossed in soul or pure meditation are the divine powers of soul or brahamastra (divine weapons). Destruction of karmas and self attainment is possible only by them.