Nirāmisasutta

Suttapiṭaka · Saṁyuttanikāya · Saḷāyatanavaggasaṁyutta · Vol. 18 · Section 454

[454] And what, bhikkhus, is equanimity not of the flesh (nirāmisā upekkhā)? Here, bhikkhus, with the abandoning of pleasure and the abandoning of pain, and with the previous passing away of joy and grief, a bhikkhu enters and dwells in the fourth jhāna, which is neither painful nor pleasant and possesses purification of mindfulness by equanimity. This, bhikkhus, is called equanimity not of the flesh.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.