Gita Rahasya : Srimad Bhagavad Gita & Karmyog Shastra  (Hindi, Hardcover, Lokmanya Balgangadhar Tilak Trans. by Madhavrao Sapray)

Shrimadh Bhagvad Gita Rahasya, popularly also known as Gita Rahasya or Karmayog Shashtra, is a 1915 Marathi language book authored by Indian social reformer and independence activist Bal Gangadhar Tilak while he was in prison at Mandalay, Burma. It is the analysis of Karma yoga which finds its source in the Bhagavad Gita, the sacred book for Hindus. According to him, the real message behind the Mahabharata's Gita is to act or perform, which is covered in the initial parts rather than renounce, which is covered in the later parts of the epic Gita.[2] He took the Mimamsa rule of interpretation as the basis of building up his thesis.