PrajTreatise on Descriptions

Treatise on Descriptions (Prajñaptiśāstra)

---

State of the Source

The full original text of the Prajñaptiśāstra, also known as the Treatise on Descriptions (施設論), has not yet been directly collated within the digital resources of this project. The Chinese translation is preserved in the Taishō Revised Tripiṭaka, catalog number T1538, volume 26, page 514a, in seven fascicles, translated by Dharmarakṣa and other translators around 1018-1058 CE. A Tibetan version also exists, but it is not discussed in detail in the present descriptive information. Since a complete collation is not yet available, the exposition below is presented only at a general level, based entirely on the supplied descriptive information, in order to help readers grasp the context and direction for further study.

---

Background

The Prajñaptiśāstra belongs to the sectarian Abhidharma corpus, within the group of Sectarian Scriptures · Comparative Texts. It is a treatise that systematizes doctrine and is representative of the Abhidharma method of thought: analyzing, classifying, and defining doctrinal categories with precision. The term prajñapti (description, designation, 施設) means “establishment,” “convention,” or “description,” referring to the way language and concepts are used in Buddhism to express reality.

Tradition regards this treatise as having been composed by Maudgalyāyana, that is, Mahāmaudgalyāyana, though the historical accuracy of this attribution remains a subject of scholarly discussion. The treatise belongs to the Abhidharma systems compiled and transmitted by one of the early Buddhist schools, reflecting the effort to crystallize and systematize teachings handed down from the early scriptural period.

---

Contents Identifiable from the Descriptive Information

According to the descriptive information, the Prajñaptiśāstra is organized in a question-and-answer format concerning doctrinal points, with a mātikā, that is, a table of topics or classificatory list, as its structural foundation. This is an important feature: mātikā (Pāli: mātikā) is a characteristic textual technique of the Abhidharma tradition, in which doctrinal themes are listed in groups and then analyzed and explained in sequence.

Another notable point is that the arguments in this treatise are supported by scriptural quotations (sutta quotes), showing a style of compilation that is both argumentative in the Abhidharma manner and anchored in the authority of the sutta collection. This distinguishes the Prajñaptiśāstra from some purely speculative Abhidharma treatises, since the author or compiler repeatedly cites scripture to establish the basis for its arguments.

The title of the treatise, “Treatise on Descriptions,” suggests that its central concern is the examination of prajñapti, that is, the concepts, names, and linguistic conventions used in the Dharma. In Buddhist philosophy, prajñapti serves as an intermediary between ordinary language and ultimate reality: descriptions are not rigid realities, yet neither are they entirely false. They are necessary conventional means for conveying the Dharma. This treatise may examine how such descriptions are constructed, classified, and employed in teaching the Dharma.

---

Significance for Study and Practice

For students of Buddhism, the Prajñaptiśāstra recalls a foundational principle: language and concepts are means, not reality itself. Studying descriptions is not meant to lead to attachment to names and forms, but to clarify how the Dharma is presented so that one is not deceived by the outer shell of words. This is the journey from saṃvṛti-satya (conventional truth) toward paramārtha-satya (ultimate truth), a key distinction throughout Buddhist philosophy.

The question-and-answer format of the treatise also has practical value for cultivation: it trains analytical thinking, helping students not to accept doctrine blindly but to ask questions and examine each doctrinal point from many angles. This is the spirit of ehipassiko, “come and see,” unfolded at the level of reasoning.

For those interested in the history of Buddhist schools and the development of Abhidharma thought, this treatise provides a model of how one school systematized and preserved the Dharma, while also showing the continuity between the sutta collection and the treatise collection in the sectarian traditions.

---

Collation Note

Researchers wishing to compare sources may consult the Chinese translation preserved in the Taishō Revised Tripiṭaka, number T1538, volume 26, page 514a, in seven fascicles, translated by Dharmarakṣa and others during the period 1018-1058 CE. This is currently the most widely accessible text. The full source text of this treatise has not been collated in the present exposition, and any more detailed analysis of its specific contents must be based directly on the original Chinese or Tibetan text.