I heard that after the author's government service ended, Baba advised him to go into the cotton trade with Damu Anna. What did Baba say about this business venture?

The provided excerpts from Chapter 3 do not contain any information about Baba advising the author to enter the cotton trade, nor is there any mention of a business venture with Damu Anna. Instead, the text recounts that in 1916, after the author's service ended, another person named Anna (Chinchonikar) asked Baba to find the author a new job. Baba replied that the author should now perform His service, assuring that his 'plates are always full; they will never be empty as long as he lives.' The focus of Baba's advice, as detailed in Chapter 3, was on spiritual service and devotion rather than any specific commercial enterprise.