Complex sentence: The Mimamsa system received its culmination through Jaimini's work though there had been earlier efforts to systematise knowledge by teachers such as Alekhana, Karsnajini (mentioned by Jaimini in his opus), their works have not been passed on.
Split into simpler sentences: The Mimamsa system received its culmination through Jaimini's work. Though there had been earlier efforts to systematise knowledge by teachers such as Alekhana and Karsnajini (mentioned by Jaimini in his opus), their works have not been passed on.