Those whose white fluid falls
during their companionship with wisdom [prajna: consort or women],
by what will their bliss increase?

[The basis of supreme bliss is the retention and transmutation of sexual energy].

Occasionally, at the appropriate time of year,
the deer-eating lion seeks the bliss of mating,
while the gravel-eating pigeon does so constantly.
Because their fluid falls once or many times,
neither finds supreme bliss.

Similarly the ascetic and the lustful
lose their fluid while in dreams and while awake.
Bitten by a snake while asleep, one will not live;
Similarly the ascetic weakened by not keeping his fluid
is ruined by a woman's womb.

Quoted from a scripture of the Tengyur (Canonical Treatises): Great Commentary / Stainless Light (Vimalaprabha) by Kalki Pundarika (176-76 BC)