It was with Patañjali that the Indian tradition of language scholarship reached its definite form. The system thus established is extremely detailed as to shiksha (phonology, including accent) and vyakarana (grammar and morphology). Syntax is scarcely touched, because syntax is not important in this highly inflexional language, but nirukta (etymology) is discussed, and these etymologies naturally lead to semantic explanations. People interpret his work to be a defense of Pāṇini, whose Sutras are elaborated meaningfully. Patañjali also examines Kātyāyana rather severely. But the main contributions of Patañjali lies in the treatment of the principles of grammar enunciated by him.

Panineya vyakaranam, Maharshi panini,panineya shta kpratipadya vishay.