To claim EPF deducted in Mumbai while in Tamil Nadu, your friend needs to verify the attached form provided by the Mumbai Office requesting a Cheque Leaf and other details. It is essential to fill out the form and return it as per EPF regulations. If your friend does not have a cheque book, he can explore alternative options such as requesting a bank statement or a letter from the bank confirming the account details. These documents can serve as substitutes for the Cheque Leaf. It is crucial to follow the EPF guidelines precisely to ensure a smooth and successful claim process. If there are any uncertainties or specific requirements, reaching out to the EPF office or consulting with a financial advisor can provide further clarity and assistance.