हठयोग प्रदीपिका (योगी स्वात्माराम - ज्योत्स्ना टीका सहित सटीक)

HAṬHAYOGAPRADĪPIKĀ 55
97. He, who drinks daily the Amarī and inhales
it day by day, should practise well Vajrolī. This is
called Amarolī.
98. He should mix ashes with the nectar flowing
from the Moon by the practice [of Amarolī] and smear it
on the principal limbs [of the body]. Then divine
sight is obtained.
Divine sight means ability to see the past, the present and
the future, as also hidden things.
99. If a woman, making herself expert through
sufficient practice, draws up the semen of man, and
preserves her own through [the practice of] Vajrolī,
she also becomes a Yoginī.
100. Without any doubt, even the least part of
her seminal fluid is not lost. In her body, the Nāda
becomes bindu itself.
That is, the Nāda that begins at the Mūlādhāra goes to the
heart and unites with the bindu. The following may perhaps throw
some light on these processes. The seminal fluid of man is called
bīja or bindu, and that of the woman, rajas. By the external union
of these two, a child is produced. But, only when these unite inter-
nally, i.e. when the things that are really denoted by these expres-
sions, unite in the inner man, he is called a Yogin. The bindu is said
to be of the nature of the Moon and rajas of the nature of the Sun.
From the union of these, is attained the supreme state. The bindu
is capable of giving svarga, meaning temporal pleasures, as also
mokṣa, i.e. emancipation. It can lead a man into virtue or vice.
In other words, understood literally, it leads to the attainment of
worldly pleasures, and hence vice; but if understood and practised
according to its inner sense, it leads to virtue and emancipation.