Text 22] Scheduled Incarnations with Specific Functions
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PURPORT
As stated in the beginning of the  Śrīmad-Bhāgavatam , everything emanates from the ultimate source of the Personality of Godhead; it is therefore understood in this verse that medical science or knowledge in medicine was also inaugurated by the Personality of Godhead in His incarnation Dhanvantari, and thus the knowledge is recorded in the  Vedas . The  Vedas  are the source of all knowledge, and thus knowledge in medical science is also there for the perfect cure of the diseases of the living entity. The embodied living entity is diseased by the very construction of his body. The body is the symbol of diseases. The disease may differ from one variety to another, but disease must be there just as there is birth and death for everyone. So, by the grace of the Personality of Godhead, not only diseases of the body and mind are cured, but also the soul is relieved of the constant repetition of birth and death. The name of the Lord is also called  bhavauṣadhi , or the source of curing the disease of material existence.
TEXT 22
क्षत्रं क्षयाय विधिनोपभृतं महात्मा
ब्रह्मधुगुञ्जितपथं नरकार्तिलिप्सु ।
उद्धन्त्यसाववनिकण्टकमुग्रवीर्य-
स्त्रिःसप्तकृत्व उरुधारपरश्वधेन ॥२२॥
kṣatram-kṣayāya vidhinopabhṛtam mahātmā
brahma-dhrug ujjhita-patham narakārti-lipsu
uddhanti-asāv avanikaṇṭakam ugra-vīryas
triḥ-sapta-kṛtva urudhāra-paraśvadhena
kṣatram —the royal order;  kṣayāya —for the matter of diminishing;  vidhinā —by destination;  upabhṛtam —increased in proportion;  mahātmā —the Lord in the form of the great sage Paraśurāma;  brahma-dhruk —the ultimate truth in Brahman;  ujjhita-patham —those who have given up the path of Absolute Truth;  naraka-ārti-lipsu —desirous to suffer pain in hell;  uddhanti —exacts;  asau —all those;  avanikaṇṭakam —thorns of the world;  ugra-vīryaḥ —awfully powerful;  triḥ-sapta —thrice seven times;  kṛtvaḥ —performed;  urudhāra —very sharp;  paraśvadhena —by the great chopper.