I've been doing thorough research but can't find any source for where this comes from. People are saying that in Valmiki Ramayana it is not mentioned that Sita Ji lifted the dhanush during childhood. But in many Ramayana shows and on websites titled 'lesser known facts of Ramayana', they are saying that Sita Ji did lift the Shiva bow during Her childhood. I need a real source for this, where it is mentioned? Maybe it is in the Ramcharitmanas or Valmiki Ramayana but no one has been able to decipher it or translate it properly? Please help me out. Thank you very much.