Saif Ali Khan was of 2 years, while shooting a film 'Paap and Punya', villain was moving forward to attack actor Shahi kapoor, then Saif suddenly bites villain on his leg to save 'Shahi uncle'. This and several other snippets related to veteran actor find mention in a book 'Shashi Kapoor: The Householder, The Star', written by Aseem Chhabra and published by Rupa Publications. According to this book, Saif's mother Sharmila Tagore told, 'Shashi and Me was shooting Paap and Punya. My son Saif that time was of two years. Shashi's son and wife were also there. Kapoor family were playing with my son and Saif started saying Shashi Uncle to Shashi Kapoor.' He siad, 'One day, Shashi happened to be shooting a scene where a villain put a noose around his neck, Saif thought this man is fighting with Shashi uncle, then bitten him on the leg.'