According to B. P. Bahirat, Dnyaneshwar was the first known philosopher who wrote in the Marathi language. At about age 16, he composed Dnyaneshwari in the year 1290, a commentary on Bhagavad Gita which later became a fundamental text of the Varkari sect. His words were recorded by Sacchidananda, who agreed to become Dnyaneshwar's amanuensis. "Dnyaneshwari" was written using the "Ovi"; a metre, which was first used to compose women's songs in Maharashtra, of four lines where the first three or the first and third lines rhyme and the fourth line has a sharp and short ending. According to W. B. Patwardhan, a scholar on Dnyaneshwar, with Dnyaneshwar the "ovi" "trips, it gallops, it dances, it whirls, it ambles, it trots, it runs, it takes long leaps or short jumps, it halts or sweeps along, it evolves a hundred and one graces at the master's command".