https://suttacentral.net/sn35.118/en/sujato wrote:“Lord of gods, there are sights known by the eye that are likable, desirable, agreeable, pleasant, sensual, and arousing.
“Santi kho, devānaminda, cakkhuviññeyyā rūpā, iṭṭhā kantā manāpā piyarūpā kāmūpasaṃhitā rajanīyā.
If a mendicant approves, welcomes, and keeps clinging to them,Tañce bhikkhu abhinandati abhivadati ajjhosāya tiṭṭhati.
their consciousness relies on that and grasps it.Tassa taṃ abhinandato abhivadato ajjhosāya tiṭṭhato tannissitaṃ viññāṇaṃ hoti tadupādānaṃ.
A mendicant with grasping does not become extinguished.Saupādāno, devānaminda, bhikkhu no parinibbāyati … pe ….
Grasping means approving/acknowledge(not denying) sights, sounds.. what are arousing but not yet aren't - they need certain amount of dedication in order for consciousness to follow.https://dictionary.sutta.org/browse/a/ajjhos%C4%81ya/ wrote:PTS Pali-English dictionary The Pali Text Society's Pali-English dictionary
Ajjhosāya，[ger. of ajjhosati，cp. BSk. adhyavasāya tiṣṭhati Divy 37，534] being tied to，hanging on，attached to，only in phrase a. tiṭṭhati （+ abhinandati，same in Divy） M.I，266； S. IV.36 sq.； 60，71 sq.； Miln.69. See also ajjhosa. （Page 12）
Non-grasping is fulfilling the above but without approving, welcoming because by then one knows conditioned dhamma, there is no need for participation.
I wonder if non-grasping could refer to the jhāna, there is no rupa in jhāna, secluded, away(farness) for consciousness to be able to grasp while mendicant still can get the effects what could grasping bring.
what you think grasping is?