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Na Tum Jaano Na Hum (transl. Neither of us knows) is a 2002 Indian Hindi-language romantic drama film starring Saif Ali Khan, Hrithik Roshan, and Esha Deol. This was the first instance of Khan and Roshan appearing in the same film. The film was directed by Arjun Sablok and produced by Future Group owner Kishore Biyani. The title of the film was taken from a song of Roshan's debut film Kaho Naa... Pyaar Hai (2000). imdb.com