Rasavaiśeṣikasūtra: A Medico-Historical Analysis of an Enigmatic Āyurvedic Text

A bstract Background/Aim: The Rasavaiśeṣikasūtra (RVS) is a distinctive and comparatively lesser-known text within the Āyurvedic canon, composed in the aphoristic sūtra style and notable for integrating classical medical concepts with broader Indian philosophical systems. This study aims to present a comprehensive analysis of the RVS and its principal commentary, the Narasiṃhabhāṣya , by examining the text’s historical context, authorship debates, philosophical foundations, and clinical doctrines using exclusively the information available in the source document. Materials and Methods: A historical–textual analysis was conducted based on the scholarly document provided. The examination focused on authorship debates surrounding Bhadanta Nāgārjuna, internal philosophical constructs, clinical doctrines, and references within the Narasiṃhabhāṣya. Textual comparison, contextual interpretation, and evaluation of medico-philosophical arguments were applied to understand the broader intellectual milieu reflected in the text. Claims regarding geographical origin—particularly the proposed Kerala connection—were critically assessed against the internal evidence of the text and commentary. Results: Analysis revealed that the RVS displays a unique epistemological framework, accepting six instruments of knowledge in a manner more closely aligned with orthodox schools such as Mīmāṃsā than with Buddhist traditions commonly associated with Nāgārjuna. The Narasiṃhabhāṣya elucidates several distinctive medical doctrines, including an advanced conceptualisation of doṣas as functional bodily divisions ( śarīrāvayavas ) and a positive, state-oriented definition of health ( ārogya ). The commentary further categorises healthy individuals into clinically relevant types with differing therapeutic needs. It provides valuable insights into the academic culture of the period, highlighting debates, dialectical engagement, and concerns about practitioners lacking theoretical rigor. The contested authorship and chronology of the text remain unresolved, with evidence both supporting and challenging the attribution to various historical figures named Nāgārjuna. Examination of the Kerala-origin hypothesis yielded insufficient textual support, suggesting a broader pan-Indian intellectual context. Conclusion: The Rasavaiśeṣikasūtra, regardless of its uncertain authorship and geographic provenance, emerges as a text of significant theoretical and clinical importance. Its sophisticated integration of medical and philosophical thought, as illuminated by the Narasiṃhabhāṣya, demonstrates a lasting influence on the development of Āyurvedic theory. The work reflects a vibrant intellectual milieu and contributes meaningfully to understanding the evolution of epistemology, clinical categorisation, and medical pedagogy within Āyurveda.