As per regulatory guidelines, fund transfer can only be made from your own linked bank account.
How long do funds take to reflect in my bank account after I request a payout?
How long does it take for deposited funds to reflect in my trading account?
Why am I being charged for funds transfer?
Can I make an IMPS/NEFT/RTGS transfer from an unlinked bank account or someone else's account? (third party transfer)