Establishing Possession (prāpti) as an Entity in the Vaibhāṣika Tradition

In the Vaibhāṣika system, possession (prāpti), classified as a factor that is neither material nor mental, is posited as a real entity that links the various dharmas associated with a sentient being to its individual continuum. In this context, possession does not refer to legal ownership or supernatural possession; rather, it refers to the attainment or endowment of dharmas, that is, how particular qualities, actions, or mental states come to be present in a given individual. This paper examines the strategies by which Vaibhāṣikas defend the ontological status of possession, thereby shedding light on the motivations underlying this doctrinal commitment. Through close philological and historical analysis of a wide range of Sarvāstivāda Abhidharma sources, including passages from a newly available manuscript folio of the Abhidharmadīpa with Vibhāṣāprabhāvṛtti, this study reconstructs the diachronic development of Vaibhāṣika arguments for the real existence of possession. Vaibhāṣikas consistently employ two principal modes of justification: appeals to scriptural authority (āgama) and logical reasoning (yukti). As the tradition develops, their defenses of possession shift from reliance on scriptural sources toward increasingly sophisticated forms of doctrinal and functional integration. Possession thus evolves from a dharma serving to clarify specific doctrinal difficulties into a structurally embedded component of Vaibhāṣika doctrinal architecture, playing an important role in its accounts of soteriology, causality, and karma.