Minor Income

There is minor child resident in India. Both the parents are non
resident living abroad. The minor child has fixed deposit in foreign
bank outiside India. The minor child files return of income offering
such income earned outside India. His parents filed respective return
declaring income earned in India. The A.O. refers to Sec 64(1A) and
Sec 5 and decides to club the minor interest income earned outside
india in the Total Income of Father. So Advice