Aṣṭādhyāyī
The foundational text of Linguistic grammar — 3,959 sūtras arranged with extraordinary economy. Each sūtra is a compressed rule governing phonology, morphology, and syntax. The Aṣṭādhyāyī is not merely a descriptive grammar but a generative system: a finite set of rules producing the infinite forms of the Linguistic language. Patañjali's Mahābhāṣya takes the Aṣṭādhyāyī as its object of commentary, addressing sūtra by sūtra.
Vārttikas
Critical annotations on Pāṇini's sūtras — additions, corrections, and supplements. The Vārttikas engage directly with the Aṣṭādhyāyī, identifying cases where the sūtras over-generate, under-generate, or remain ambiguous. Patañjali discusses and responds to the Vārttikas throughout the Mahābhāṣya, often defending Pāṇini against Kātyāyana's objections.
Mahābhāṣya
The Great Commentary — the central text of this archive. Patañjali's commentary on Pāṇini's Aṣṭādhyāyī (and on Kātyāyana's Vārttikas) is one of the most philosophically rich and technically precise texts in the Linguistic grammatical tradition. It moves between grammatical analysis, philosophical inquiry, and epistemological argument. The Mahābhāṣya is traditionally studied together with the Pradīpa and Uddyota as an integrated three-layer textual object.
Bhāṣyapradīpa
The Lamp of the Commentary — Kaiyaṭa's sub-commentary on the Mahābhāṣya. The Pradīpa illuminates obscure passages in the Bhāṣya, explains technical terminology, and provides philosophical grounding. Kaiyaṭa is known for integrating the concept of śabda-brahman into his reading of Patañjali, connecting the Mahābhāṣya to Vedāntic currents of thought. His commentary is authoritative within the tradition and indispensable for serious study.
Bhāṣyapradīpoddyoṭa
The Illumination of the Lamp — Nāgeśa's sub-sub-commentary on Kaiyaṭa's Pradīpa. Nāgeśa is one of the most technically precise commentators in the Linguistic grammatical tradition. He clarifies Kaiyaṭa's readings, identifies and resolves apparent contradictions, and advances his own interpretations. The Uddyota represents the culmination of centuries of accumulated precision in the reading of Patañjali's text.
Chāyā
A shadow or literal gloss that shadows the Pradīpa and Uddyota, providing syntactic clarification and supplying elided elements. The Chāyā functions as a reading aid for students who find the compressed prose of the commentaries difficult to parse. It does not add philosophical content but makes the structure of the argument visible. Its presence in an edition signals scholarly care for the student reader.