阿彌陀經通贊疏 3.87

3.87

Third, the antidotes. The Mahāprajñāpāramitopadeśa establishes four siddhāntas—siddhānta means tenet: first, the worldly siddhānta; second, the individual person siddhānta; third, the therapeutic siddhānta; fourth, the ultimate truth siddhānta. The defilement of the kalpa and the defilement of sentient beings are countered by the worldly siddhānta. Recognizing that the container world and the world of sentient beings are both illusory, one cultivates the path through revulsion and fear, and thereby abandons them forever. The defilement of lifespan is countered by the individual person siddhānta. Recognizing that human existence is obtained through wholesome karma, one cultivates and upholds the pure precepts and practices non-killing and the like, so that lifespan naturally lengthens; or, by preaching the fruit of nirvāṇa of their own vehicle to practitioners of the three vehicles respectively, one removes all the defilement of lifespan belonging to birth and death. The defilement of afflictions and the defilement of views are countered by the therapeutic siddhānta, practicing the corresponding antidotal path so that they are prevented from arising. Because the five defilements are destroyed by the three siddhāntas, one enters the ultimate truth and realizes the true principle.