When mastered, body contemplation is amazing and wonderful in all sorts of ways – not narrow at all. Wherever Luang Pu Mun went, he would rely on body contemplation to keep his heart light and at ease There are many monks with a lot of pāramī who claim that their mind is continually light and bright, that kilesas do not arise at all or only in subtle ways and that Dhamma is clear to them. They claim that they see everything arising and passing away and that they do not attach to any of it – so they do not see any need to investigate the body. However, this is just samādhi, being stuck in samādhi, being attached to a self-image of being enlightened, of being someone who understands Dhamma. But they are still stuck in saṁsāra without anything preventing them from falling into lower realms in the future. Kilesas are very tricky, very clever. If you look at the practice of truly enlightened people, you will see that they all followed the path of body contemplation. Luang Por Chah himself practiced this way. He taught asubha practice – especially investigation of hair, body hair, nails, teeth and skin or seeing the body as a rotten corpse – but he would teach this more in private to specific individuals.
Ajahn Dtun. This is the Path.