Hatha yoga but it is the mainstay of Hatha yoga. Mudras and certain kundalini-related ideas are included in Hatha yoga, but not mentioned in the Yoga Sutras of Patanjali. Patanjali yoga considers "asanas" important but dwells less on various "asanas" than the Hatha yoga texts. In contrast, the Hatha yoga texts consider meditation as important but dwell less on meditation methodology than Patanjali yoga. The Hatha yoga texts acknowledge and refer to Patanjali yoga, attesting to the latter's antiquity. However, this acknowledgment is essentially only in passing, as they offer no serious commentary or exposition of Patanjali's system. This suggests that Hatha
Karma karma theories is the concept of reincarnation or the cycle of rebirths ("saṃsāra"). Rebirth is a fundamental concept of Hinduism, Buddhism, Jainism and Sikhism. The concept has been intensely debated in ancient literature of India; with different schools of Indian religions considering the relevance of rebirth as either essential, or secondary, or unnecessary fiction. Karma is a basic concept, rebirth is a derivative concept, so suggests Creel; Karma is a fact, asserts Yamunacharya, while reincarnation is a hypothesis; in contrast, Hiriyanna suggests rebirth is a necessary corollary of karma. Rebirth, or "saṃsāra", is the concept that all life forms go