Yoga Kuṇ?alini Upani?ad on Kuṇ?alini Yoga belongs to Krisna Yajurveda. There are three chapters in it. In the first chapter, the two causes of Citta Vṛtti, the three methods of controlling Prana ? moderation in diet, Asana and Sakti Calini Mudra are described. Then Sarasvati Calana, types of Pranayama ? Suryabhedi, Ujjayi, Shitali, Bhastrika, etc., three Bandhas ? Moola Bandha, Uddiyana Bandha and Jalandhara Bandha, obstacles in yoga and protection from them, awakening of Kuṇ?alini through yoga practice, penetration of three Granthis ? Brahmagranthi, Visṇugranthi and Rudragranthi, Kuṇ?alini entering Sahasrara Cakra (thousand petalled lotus), dissolution of Prana, etc. into Siva, realization of Self everywhere during Samadhi and subjects like Samadhi Yoga, etc. are described in detail. The second chapter begins with the lucid explanation of Khecari Mudra. The features of Khecari, its results, perfection of Khecari by Mantra Japa, sequence of Khecari practice, etc., are described elaborately. In the beginning of the third chapter the Khecari Melana Mantra for Khecari Siddhi is described specifically. The vision of a Sadhaka during his Sadhana is described by giving examples of new moon, first lunar date and full moon. Then attaining perfection for the union with macrocosm through Pranayama, impossibility of Self-realization without practice, knowledge of the Brahman through the discourse of a Sadguru, manifestation of Brahma in the form of Vak, Vṛtti and Vishva, etc., the nature of Parabrahma and at the end, means to attain Brahma ? Dhyana, Jivanmukti and Videhamukti, etc., topics are explained. Thus, the major subjects of Yoga are presented in this Upani?ad, which makes it unique and complete.