About Nyasa (ritual)

Nyasa is a concept in Hinduism. It involves touching various parts of the body while chanting specific portions of a mantra. This imposition of mantras upon the body is considered as the assigning or locating of divinity inside one's own body. For example, nyasa is part of the equipment of a sculptor as a sādhaka and yogi.
Manjuvajra Embracing His Consort

Tantric practices – The esoteric South Asian traditions

Tantra are the esoteric traditions of and Buddhism that developed in South Asia from the middle of the 1st millennium CE onwards. The term tantra, in the Indian traditions, also means any systematic broadly applicable text, theory, system, method, instrument, technique or practice. A key feature of these traditions is the use of mantras, and thus they are commonly referred to as Mantramārga ("Path of Mantra") in Hinduism or Mantrayāna ("Mantra Vehicle") and Guhyamantra ("Secret .