Mouth of the Vedapurusa
Vyakarana or grammar is that the "mukha" of the Vedapurusa, his mouth. The Tamil word for grammar is "illakanam". Grammar deals with the "laksanas" of a language. "Laksmana(n)" is "llukkumanan" in Tamil. within the same way, "laksana(m)" becomes "illakanam" therein language. There are variety of works on Sanskrit grammar. the foremost widely used and important is that the one by the good sage Panini. there's a gloss - a vartika- on his "Vyakarna-sutra" by Vararuci. Patanjali has written a bhasya or commentary on Panini's sutras. These three are the chief works on Sanskrit grammar.
There is a difference between grammar and other sastras. within the case of other subjects the first sutras constituting them are esteemed quite their bhasyas. But, within the case of grammar, or Vyakarana, the Vartika is more valued than the sutras and still more valued is that the bhasya.According to one reckoning, there are six sastras. Vyakarana is one among them. Four of the sastras are particularly important: aside from Vyakarana, Tarka (logic), Mimamsa and Vedanta. Vyakarna is additionally one among the vedic sadanga (six limbs of the vedas).