Bar on prosecution and on inadmissibility of evidence in certain circumstances. 35K.   (1) A person shall not be proceeded against for an offence under section 35A or section 35D in relation to the assessment for an assessment year in respect of which the penalty imposed or imposable on him under clause (iii) of sub-section (1) of section 18 has been reduced or waived by an order under section 18B. (2) Where any proceeding for prosecution has been taken against any person under this Act, any statement made or account or other document produced by such person before any wealth-tax authority (not being an Inspector of Income-tax) shall not be inadmissible as evidence for the purpose of such proceedings merely on the ground that such statement was made or such account or other document was produced in the belief that the penalty imposable would be reduced or waived under section 18B or that the offence in respect of which such proceeding was taken would be compounded.