Quotes from the Dyhanabindu upanishad

Muladhara is the first chakra. Svadhishthana is the second.

Between these two is said to be the seat of yoni (perineum),

having the form of Kama (God of love). In the Adhara of the

anus, there is the lotus of four petals. In its midst is said

to be the yoni called Kama and worshipped by the siddhas. In

the midst of the yoni is the Linga facing the west and split at

its head like the gem. He who knows this, is a knower of

the Vedas.

He is knower of yoga who knows that prana always

draws itself from apana and apana draws itself from prana

Paramesvari (viz., kundalini sakti) sleeps shutting with her mouth

that door which leads to the decayless Brahma-hole. Being aroused by the contact of agni with manas and prana, she takes

the form of a needle and pierces up through Sushumna. The

yogin should open with great effort this door which is shut.

Then he will pierce the door to salvation by means of kundalini.

Folding firmly the fingers of the hands, assuming firmly the

Padma posture, placing the chin firmly on the breast and fixing

the mind in dhyana, one should frequently raise up the apana.

When this Jalandhara bandha which is

destroyer of the pains of the throat is performed, then nectar

does not fall on agni nor does the vayu move.

This bindu is twofold, white and red. The white one is called

sukla and the red one is said to contain much rajas. The

rajas which stays in yoni is like the colour of a coral. The bindu

stays in the seat of the genital organs. The union of these two

is very rare. Bindu is siva and rajas is sakti. Bindu is the

moon and rajas is the sun. Through the union of these two is

attained the highest body ; when rajas is roused up by agitating

the s akti through vayu which unites with the sun, thence is

produced the divine form. Sukla being united with the moon

and rajas with the sun, he is a knower of yoga who knows the

proper mixture of these two.