It was at this time that Dilip Kumar approached her to write his biography , The Substance and the Shadow , which made the Amazon bestseller list within two weeks of its publication .
In 2000 , Mrs Nayar once again left Screen to help raise her grandchildren .
It was at this time that Dilip Kumar approached Nayar to write his biography , The Substance and the Shadow , which made the Amazon bestseller list within two weeks of its publication .
In 2000 , Mrs Nayar once again left Screen to help raise her grandchildren .