The Special Marriage Act, 1954
43. Penalty on married person marrying again under this Act. –
Save as otherwise provided in Chapter III, every person who, being at the time married, procures a marriage of himself to others to be solemnized under this Act shall be deemed to have committed an offence under section 494 or section 495 of the Indian Penal Code (Act XLV of 1860), as the case may be, and the marriage so solemnized shall be void.