Income-tax Act, 1961
Where the Assessing Officer is satisfied that any undisclosed income belongs to any person, other than the person with respect to whom search was made under section 132 or whose books of account or other documents or any assets were requisitioned under section 132A, then, the books of account, other documents or assets seized or requisitioned shall be handed over to the Assessing Officer having jurisdiction over such other person and that Assessing Officer shall proceed [under section 158BC] against such other person and the provisions of this Chapter shall apply accordingly.