Akṣayamatinirdeśa Sūtra
The Akṣayamatinirdeśa (Skt, Exposition of Akṣayamati, Tibetan: Blo gros mi zad pas bstan pa; Chinese: Wujinyi pusa pin / Achamo pusa jing, 無盡意菩薩品 / 阿差末菩薩經) is a Mahāyāna sūtra which teaches the doctrine of imperishability (akṣayatā) and the eighty different aspects of the Dharma which are imperishable (which constitute the whole bodhisattva path).[7] The main teachings of the Akṣayamatinirdeśa is the imperishability or inexhaustibility (akṣayatā) of reality, as well as the bodhisattva practices and also the unity of different ideas (such as prajñā or insight and skillful means or upaya).[11] The main body of the Akṣayamatinirdeśa explains eighty bodhisattva qualities which are called "imperishables" (akṣayas), including the thought of awakening (bodhicitta), the perfections (pāramitā), the super-knowledges (abhijñā) and the practices conducing to enlightenment (bodhipākṣika-dharma).[4][12] Another important theme of this sutra is the unification or integration (yuganaddha) of seemingly opposite or different qualities, especially the union of wisdom (prajñā) and skillful means (upāya) – i.e. prajñopāyayuganaddha.[2] According to the influential Tibetan author Tsongkhapa, the main hermeneutical principle of the madhyamaka school is based on the Akṣayamatinirdeśa, which states that the sutras that teach emptiness are those which are definitive.