1. The document discusses a theory proposed by Professor P.N. Oak that the Taj Mahal was originally a Shiva temple called Tejo Mahalaya, not a tomb for Mumtaz Mahal. 2. Oak cites several pieces of evidence to support this claim, including documents showing the Taj Mahal predated Shah Jahan, architectural features more consistent with a Hindu temple, and sealed rooms believed to contain Hindu idols. 3. The theory challenges the widely accepted narrative that the Taj Mahal was built by Shah Jahan as a mausoleum for his wife Mumtaz, and some historians have dismissed or suppressed Oak's research.