Complex sentence: Swami Ramdas is a well-known example of a modern-day saint who attained Nirvana through constant repetition of "Om Sri Ram Jai Ram Jai Jai Ram" and established Anandashram, where this mantra is sung continuously from morning to night.
Split into simpler sentences: Swami Ramdas is said to have attained Nirvana through constant repetition of "Om Sri Ram Jai Ram Jai Jai Ram". He established Anandashram, where this mantra is sung continuously from morning to night.