Cakrasaṃvara, Chinese: 胜乐金刚 shènglè jīngāng; Tibetan: Korlo Demchog (Tibetan: འཁོར་ལོ་སྡོམ་པ / བདེ་མཆོག; Wylie: khor lo sdom pa / bde mchog) is a heruka (and known simply as Heruka to Gelugpa Buddhists) and one of the principal iṣṭha-devatā, or meditational deities of the Sarma schools of Tibetan Buddhism. The Cakrasaṃvara sadhana is considered to be of the mother class of the Anuttara Yoga Tantra. Cakrasaṃvara is typically depicted with a blue-coloured body, four faces, and twelve arms, and embracing his consort Vajravarahi (in Chinese 金刚亥母 jīngāng hàimǔ)in the yab-yum position. Other forms of the deity are also known, with varying numbers of limbs. Cakrasaṃvara and consort are not to be thought of as two different entities, as an ordinary husband and wife are two different people; in reality, their divine embrace is a metaphor for the union of great bliss and emptiness, which are one and the same essence.
- Cakra-Samvara Tantra, chapters I-XIX, consists mostly of mantric procedures;
- Cakra-Samvara Tantra, chapters XX-XXIV, consists mostly of secret codes;
- Cakra-Samvara Tantra, chapters XXV-XXXVIII, consists mostly of offerings for summons;
- Cakra-Samvara Tantra, chapters XXXIX-LI, consists mostly of ritual techniques.
Cakrasamvara manifests in a number of forms, including a two-armed form. As one of the principal yidams of the Kagyupa lineage of Tibetan tantric Buddhism, he is most often depicted in this form and in union with the red Wisdom Dakini Dorje Phagmo. In Western meditation texts the name Cakrasamvara or Korlo Demchog is often translated to mean Highest Bliss. Meditation on Korlo Demchog is an advanced practice transmitted by ones lama, and binds the mind of the meditator to enlightenment itself.