This samadhi yoga is, according to the Gheranda Sanghita, of six kinds. (1) Dhyanayogasamadhi, attained by shambhavi mudra, in which, after meditation on the Vindu-Brahman and realization of the Atma (atmapratyaksha), the latter is resolved into the Mahakasha. (2) Nadayoga, attained by khechari mudra, in which the frenum of the tongue is cut, and the latter is lengthened until it reaches the space between the eyebrows, and is then introduced in a reversed position into the mouth. (3) Rasanandayoga, attained by kumbhaka, in which the sadhaka in a silent place closes both ears and does puraka and kumbhaka until he hears the word nada in sounds varying in strength from that of the cricket's chirp to that of the large kettledrum. By daily practice the anahata sound is heard, and the jyotih with the manas therein is seen, which is ultimately dissolved in the supreme Vishnu. (4) Layasiddhiyoga, accomplished by the celebrated yonimudra already described. The sadhaka, thinking of himself as Shakti and the Paramatma as Purusha, feels himself in union (sanggama) with Shiva, and enjoys with him the bliss which is shringararasa, and becomes Bliss itself, or the Brahman. (5) Bhakti Yoga, in which meditation is made on the Ishtadevata with devotion (bhakti) until, with tears flowing from the excess of bliss, the ecstatic condition is attained. (6) Rajayoga, accomplished by aid of the manomurchchha kumbhaka. Here the manas detached from all worldly objects is fixed between the eyebrows in the ajnachakra, and Kumbhaka is done. By the union of the manas with the atma, in which the jnani sees all things, rajayogasamadhi is attained.