I'm a four-precepts lay person with celibacy as the fifth. I've heard that perception of a skeleton when properly cultivated is a suitable subject to prevent lust or delight in forms, I've also heard the story about venerable Tissa saw a skeleton instead of a running woman, but I can't seem to find a super detail instruction in the suttas, the best I can find are these fragments.
https://suttacentral.net/sn46.57/en/sujato wrote: “Mendicants, when the perception of a skeleton is developed and cultivated it’s very fruitful and beneficial. How so? It’s when a mendicant develops the perception of a skeleton together with the awakening factors of mindfulness, investigation of principles, energy, rapture, tranquility, immersion, and equanimity, which rely on seclusion, fading away, and cessation, and ripen as letting go. That’s how the perception of a skeleton, when developed and cultivated, is very fruitful and beneficial.”
Please share suttas, commentaries or sub-commentaries regard to the cultivation of skeleton perception.https://suttacentral.net/thag1.18/en/sujato wrote: There was an heir of the Buddha,
a monk in Bhesakaḷā forest,
who suffused the entire earth
with the perception of bones.
I think he will quickly
get rid of sensual desire.