who wrote a famous treatise on sanskrit grammer
Pāṇini Pāṇini is known for his text Ashtadhyayi, a sutra-style treatise on Sanskrit grammar,[6][1][2] 3,959 "verses" or rules on linguistics, syntax and semantics in "eight chapters" which is the foundational text of the Vyākaraṇa branch of the Vedanga, the auxiliary scholarly disciplines of the Vedic period.[8][9][10] His aphoristic text attracted numerous bhashya (commentaries), of which Patanjali's Mahābhāṣya is the most famous in Hindu traditions.[11][12] His ideas influenced and attracted commentaries from scholars of other Indian religions such as Buddhism.[13]
Languages with official status in India The Indian constitution, in 1950, declared Hindi in Devanagari script to be the official language of the union. Unless Parliament decided otherwise, the use of English for official purposes was to cease 15 years after the constitution came into effect, i.e., on 26 January 1965. The prospect of the changeover, however, led to much alarm in the non Hindi-speaking areas of India, especially Dravidian-speaking states whose languages were not related to Hindi at all. As a result, Parliament enacted the Official Languages Act, 1963,[8] [9][10][11][12][13] which provided for the continued use of English for official purposes along with Hindi, even after 1965.