The Yoga Yajnavalkya (Sanskrit: योगयाज्ञवल्क्य, yoga-yājñavalkya) is a classical treatise on yoga traditionally attributed to sage Yajnavalkya. It takes the form of a dialogue between Yajnavalkya and his wife Gargi, a renowned female philosopher. The extant Sanskrit text consists of 12 chapters and contains 504 verses. Most later yoga texts like the Hatha Yoga Pradipika, the Yoga Kundalini and Yoga Tattva Upanishads have borrowed verses almost verbatim from or make frequent references to the Yoga Yajnavalkya. In the Yoga Yajnavalkya, yoga is defined as the union between the individual self (jivatma) and the Divine (paramatma).