After Babur had captured the throne of Delhi in 1526 AD, Rana Sangram Singh or Rana Sanga of Mewar lead a confederation of Rajput Kings against Babur to capture the throne of Delhi. But in The Battle of Khanua in 1527, the combined Hindu forces were defeated, and Rana Sanga died shortly afterwards from his wounds.
Rani Karnavati took up the regency in the name of her elder son Vikramaditya, a weak ruler. In the meantime, Mewar was attacked for the second time by Bahadur Shah of Gujarat, at whose hands Vikramaditya had earlier received an defeat. It was a matter of great concern for Rani.
The antagonized nobles were not ready to fight for Vikramaditya and the imminent battle was sure to be another blot in the history of Sisodias. Rani Karnavati wrote to the nobles to come forward for the sake of the honour of the Sisodias, and was able to persuade the nobles to fight for Mewar, if not for Vikramaditya. Their sole condition was that Vikramaditya and Uday Singh should go to Bundi during the war for their personal safety. Rani also sent a Rakhi to Mughal Emperor Humayun, calling him a brother and asking for help. Thus her name became irrevocably linked to the festival of Raksha Bandhan.[1][2]