OK fine.
So you and your CA thinking to report cb in your father's itr ?
Your fathers Tax slab will be changed, managing itr is might be easy.
Suddenly made 56 lakh payments through Credit Card and showed an income increment of 60k ???
But what will your father will say, if it dept. People ask, did 56 lakh transactions for cashback be 60k ?
You crossed 40 lakh+ transactions just after opening an account .. individual current ac. What will say if anyone asks why you did this many transactions? ... for being a mediator for your father's cashback rotation?
Just do this following. Also discuss with your CA
Atleast your father can say, my son made transactions without my sense. Your below 21 only know, they will just warn you to not repeat.
https://www.technofino.in/community/threads/ais-credit-card-usage-notice.17517/post-364810