As a thumb rule, one needs to understand that the Income-tax Dept wants to make sure that all the income is accounted for and the tax has been paid on it. In your given scenario, the IT dept May issue you notice. But, at the end when you will give the PAN card details of your friends along with the entry of their accounts showing they paid for you, and the bill for it, etc. Then in that scenario, the IT officer will know that he might need to pull out your friend's data and check whether they had sufficient income to justify that kind of Spending.
So worst come to worst IT dept may give your advice not to do it in the future but practically they can't stop you from doing it and you can continue to do it.
Golden Rule: Have proper accounting done for all the expenses.