In Theravāda Buddhism, pariyatti, paṭipatti, paṭivedha (Pāli; "Learning; practicing; realizing") is an educational concept consisting of three progressive stages culminating in full understanding of the Buddha's teaching. Pariyatti refers to the theoretical study of the Buddha's teaching as preserved within the suttas and commentaries of the Pāli Canon; paṭipatti means to put the theory into practice; and paṭivedha means penetrating the theory or rather experientially realizing the truth of it, that is the attainment of the four stages of awakening. Traditionally, pariyatti serves as the foundation of paṭipatti, and paṭipatti serves as the foundation of paṭivedha.
The Pāli Canon is the most complete Buddhist canon surviving in a classical Indian language, Pāli, which serves as the school's sacred language and lingua franca.[1] In contrast to Mahāyāna and Vajrayāna, Theravāda tends to be conservative in matters of the theoretical study of the doctrine (pariyatti) and monastic discipline (vinaya).[2] One element of this conservatism is the fact that Theravāda rejects the authenticity of the Mahayana sutras (which appeared onwards).[3] [4]
According to U Ba Khin, Pariyatti is the teaching of the Buddha, the arahats (fully awakened beings) and the ariyas (persons who have tasted Nibbana), who have really and in detail understood the Four Noble Truths and teach what they themselves know to be true, what they have seen to be true and real from their own experience. At times, when it is not possible to find noble people such as a Buddha, arahats or ariyas to revere and rely on, one will have to establish as one's teacher the teachings of the Buddha contained in the 84,000 sections of the scriptures. One has to practise these teachings which lead to the path (magga) and fruition (phala) states and Nibbana. When one meets with a Buddha, arahats and noble ariyas, it is truly possible to practise morality, concentration and insight and attain the paths and fruits of awakening by merely listening to and following their teachings, which are given based on firsthand personal experience and knowledge.[5]