Complex sentence: Baba Jai Gurudev led a non-profit organization named "Jai Gurudev Dharm Pracharak Sanstha" that operates from his ashram in Mathura, with a mission to spread the messages of the Sant Mat doctrine.
Split into simpler sentences: Baba Jai Gurudev led a non-profit organization named "Jai gurudev Dharm Pracharak Sanstha". Its mission is to spread the messages of the Sant Mat doctrine.