When serving a karmamudra [spouse], the pure awareness
of bliss and emptiness will arise:
Composed in a blessed union of insight and means,
Slowly send down, retain and draw back up the bodhichitta [the sexual energy],
And conducting it to the source [the divine], saturate the entire body.
But only if lust and attachment are absent will that awareness arise.

Then gaining long-life and eternal youth, waxing like the moon,
Radiant and clear, with the strength of a lion,
You will quickly gain mundane power and supreme enlightenment.

from "The Song of Mahamudra" (Do ha mdzod brgyad ces bya ba Phyag rgya chen po'i man ngag gsal bar ston pa'i gzhung)


"How foolish we are! We often think that we never do all the foolishness and perversities that we see others do; this is why we arrive at the conclusion that we are magnificent persons. Unfortunately, we do not see the foolishness and wretched things we do."