, Haridwar|thumb|right Whether the two works, the Yoga Sutras and the
Mahābhāṣya, are by the same author has been the subject of considerable debate. The authorship of the two is first attributed to the same person in Bhojadeva's
Rajamartanda, a relatively late (10th century) commentary on the Yoga Sutras, as well as several subsequent texts. As for the texts themselves, the Yoga Sutra iii.44 cites a sutra as that from Patanjali by name, but this line itself is not from the Mahābhāṣya. This 10th-century legend of single-authorship is doubtful. The literary styles and contents of the Yogasūtras and the Mahābhāṣya are entirely different, and the only work on medicine attributed to Patañjali is lost. Sources of doubt include the lack of cross-references between the texts, and no mutual awareness of each other, unlike other cases of multiple works by (later) Sanskrit authors. Also, some elements in the Yoga Sutras may date from as late as the 4th century C.E., ====== The ("great commentary") of Patañjali on the of is a major early exposition on Pāṇini, along with the somewhat earlier
Varttika by
Katyayana. Patanjali relates to how words and meanings are associated – Patanjali claims
shabdapramâNaH – that the evidentiary value of words is inherent in them, and not derived externally This concept has been linked to the modern notion of
phoneme, the minimum distinction that defines semantically distinct sounds. Thus a phoneme is an abstraction for a range of sounds. However, in later writings, especially in Bhartrihari (6th century CE), the notion of
sphoTa changes to become more of a mental state, preceding the actual utterance, akin to the
lemma. Patañjali's writings also elaborate some principles of
morphology (
prakriyā). In the context of elaborating on Pāṇini's aphorisms, he also discusses
Kātyāyana's commentary, which are also aphoristic and
sūtra-like; in the later tradition, these were transmitted as embedded in Patañjali's discussion. In general, he defends many positions of Pāṇini which were interpreted somewhat differently in Katyayana.
Metaphysics as grammatical motivation Unlike Pāṇini's objectives in the Ashtyadhyayi, which is to distinguish correct forms and meanings from incorrect ones (
shabdaunushasana), Patanjali's objectives are more metaphysical. These include the correct recitations of the scriptures (
Agama), maintaining the purity of texts (
raksha), clarifying ambiguity (
asamdeha), and also the pedagogic goal of providing an easier learning mechanism (
laghu).
Nathan McGovern argues Patanjali never used this mongoose-snake analogy. Patanjali also sheds light on contemporary events, commenting on the recent Greek incursion, and also on several tribes that lived in the Northwest regions of the subcontinent.
Patanjalatantra Patanjali is also the reputed author of a medical text called
Patanjalah, also called
Patanjala or
Patanjalatantra. This text is quoted in many yoga and health-related Indian texts. Patanjali is called a medical authority in Sanskrit texts such as
Yogaratnakara,
Yogaratnasamuccaya,
Padarthavijnana,
Cakradatta bhasya. Some of these quotes are unique to
Patanjala, but others are also found in major Hindu medical treatises such as
Charaka Samhita and
Sushruta Samhita. There is a fourth scholar named Patanjali, who likely lived in 8th-century and wrote a commentary on
Charaka Samhita called
Carakavarttika. The two medical scholars named Patanjali may be the same person, but generally accepted to be completely different from the Patanjali who wrote the Sanskrit grammar classic
Mahabhasya. ==Legacy==