The term “thorough knowledge” （pari-√jñā, to know thoroughly）, which is well known from Early Buddhism, is frequently used in the Yuktiṣaṣṭikākārikā. This paper investigates the understanding of “thorough knowledge” （parijñā/ parijñāna/ parijñāta/ yongs su shes pa） for Candrakīrti in his Yuktiṣaṣṭikāvṛtti, including its meaning, characteristics, its functions in practice, and so forth.
According to Candrakīrti, thorough knowledge means to fully realize the aspect of non-arising of the theory of dependent-arising （pratītyasamutpāda）. It is characterized as being without conceptualizing of the specific characteristics of existence, without objective support （*ālamba）, and a state that all the signs （*nimitta） are calm. Furthermore, knowing thoroughly is a necessary condition for achieving liberation, which takes the theory of dependent-arising, viz., things dependently arisen are non-arisen, as a thought foundation; it also can cut off the root cause of various views and defilements. In addition, Candrakīrti applies the theory of dependent-arising to the traditional teaching of the Four Noble Truths. Then, he explains the traditional thorough knowledge of the truth of suffering as thorough knowledge that realizes that the dependently arisen three truths, viz., suffering, cause, and path, are all non-arising by nature in a moment.
