The Pali suttas contain the classification of the five faculties of feeling, which appear derived from a classification of two feelings, as follows:
It appears these teachings about 'feeling faculties (indriya)' might only be found in SN 36.22 and in SN 48.31-40.And what are the two feelings?
Katamā ca, bhikkhave, dve vedanā?
Physical and mental.
Kāyikā ca cetasikā ca—
And what are the five feelings?
Katamā ca, bhikkhave, pañca vedanā?
The faculties of pleasure, pain, happiness, sadness, and equanimity. …
Sukhindriyaṃ, dukkhindriyaṃ, somanassindriyaṃ, domanassindriyaṃ, upekkhindriyaṃ—
Yesterday, I read SN 48.40 for the first time. While I found SN 48.40 useful for refuting FrankK's revisionism, I also found it to be questionable for the following reasons:
1. The four jhanas are called 'rupa jhana'. I assume this is so because the rapture (piti) & happiness (sukha) arises from the calming of the bodily formation and the associated dissolving of the mental sankharas (aka 'stress') previously stored within the physical body.
2. SN 48.40 appears to equate jhana rapture (piti) with sukhindriyassa; a physically originated feeling.
3. SN 48.40 appears to equate jhana happiness (sukha) with somanassindriyaṃ; a mentally orientated feeling.
4. If the above is true, it seems SN 48.40 deems 'jhana sukha' a mental reaction to the physical 'jhana rapture (piti)'.
5. If the above is true, it does not make sense to me because if sukha was a mental reaction to physical piti then the sukha, I imagine, would cease immediately upon the ceasing of the piti or, otherwise, not last very long.
6. Personally, I think rapture (piti) & happiness (sukha) of jhana should be of the same rupa-originated nature but merely differing in intensity. In other words, as the nama-rupa continues to calm in the progression of the jhanas, it seems logical and natural that rapture would fade into sukha and then sukha fade into equanimity.
Please discuss and/or kindly offer some references.