Activity must be dedicated to God, the Highest Good. Then it will provide health to body and mind.
Sai Baba of Shirdi, also known as Shirdi Sai Baba (c. 1830s - 15 October 1918) was an Indian spiritual leader who is regarded by his devotees as a saint, a fakir, a satguru and an incarnation (avatar) of God. He was revered by both his Hindu and Muslim devotees during, as well as after his life.
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