Immunity from inquiry for foreign remittances prevents tax investigations and disclosure of source, shielding recipients under the Act. Statutory immunities bar disclosure and bar inquiry or investigation into specified foreign exchange remittances and gifts or ownership of India Development Bonds; such remittances are inadmissible as evidence and are not to be taken into account in Income tax Act proceedings. Exceptions apply where foreign exchange must be repatriated under applicable foreign exchange provisions within an unexpired statutory period, and for prosecutions and civil liabilities under specified penal statutes. Tax authorities may not treat scheme remittances as taxable gifts, and transfers of cumulative bonds for nominal value plus accrued interest do not produce taxable capital gains.