The Pāṇinian commentator Kātyāyana (c. 3rd–4th century BCE) knew of the coexistence of Middle Indic forms with earlier ones. There is a Pāṇinian rule that provides that verb bases listed in an appendix to the Aṣṭādhyāyī have the class name dhātu (verbal base, root). Kātyāyana discusses whether one could define verbal bases semantically and thereby possibly do without the verb list. He remarks that even if one defines a verbal base as denoting an action, the roots must be listed in order to preclude the possibility that constituents of terms such as āṇapayati/āṇavayati ‘commands’ be assigned the class name in question; āṇapayati/āṇavayati is a Middle Indic counterpart of Sanskrit ājñāpayati.
ancient Sanskrit grammarian
Pāṇini (fl. 7th-5th century BCE) (Sanskrit: पाणिनि, IPA: [pɑːɳin̪i]; a patronymic meaning "descendant of Paṇi"), or Panini, was a Sanskrit grammarian from ancient India. He was born in Pushkalavati, w:GandharGandhara - on the outskirts of modern-day Charsadda - a city in the Khyber Pakhtunkhwa province of Pakistan. Pāṇini is known for his Sanskrit grammar, particularly for his formulation of the 3,959 rules of Sanskrit morphology, syntax and semantics in the grammar known as Ashtadhyayi (अष्टाध्यायी Aṣṭādhyāyī, meaning "eight chapters"), the foundational text of the grammatical branch of the Vedanga, the auxiliary scholarly disciplines of Vedic religion (Hinduism).
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Grammars (vyākaraṇas) concern the description of speech forms (śabda) considered to be correct (sādhu) through derivation and thereby serve to make understood the usage found in the Vedas. The grammar that was granted the status of a Vedāṅga is that of Pāṇini. This work is referred to in toto as a śabdānuśāsana (means of instruction of correct speech forms); since the core of Pāṇini’s work comprises the eight chapters of sūtras that serve to describe both the current language of his time and features particular to Vedic, it also bears the name Aṣṭādhyāyī (“Collection of Eight Chapters”).
Panini, the ancient grammarian (probably belonged to 5th century or sixth century BC) mentions a character called Vasudeva son of Vasudeva, and also mentions Kaurava and Arjuna which testifies to Vasudeva Krishna, Arjuna and Kauravas being contemporaries. Megasthenes (350-290 BC), a Greek ethnographer and an ambassador of Seleucus I to the court of Chandragupta Maurya mentioned about Herakles in his famous work Indica. Many scholars have suggested that the deity identified as Herakles was Krishna
Ashtadhyayi distinguishes between usage in the spoken language and usage that is proper to the language of the sacred texts. The Ashtadhyayi is generative as well as descriptive. With its complex use of metarules, transformations, and recursions, the grammar in Ashtadhyayi has been likened to the Turing machine, an idealized mathematical model that reduces the logical structure of any computing device to its essentials.
Ashtadhyayi Sanskrit treatise on grammar was written in the 6th to 5th century BCE by the Indian grammarian Panini. This work set the linguistic standards for Classical Sanskrit. It sums up in 4,000 sutras the science of phonetics and grammar that had evolved in the Vedic religion. Panini divided his work into eight chapters, each of which is further divided into quarter chapters, beyond defining the morphology and syntax of Sanskrit language.