Mahasatipatthanasutta 21.34

21.34

Pītiyā ca virāgā upekkhako ca viharati, sato ca sampajāno, sukhañca kāyena paṭisaṃvedeti, yaṃ taṃ ariyā ācikkhanti ‘upekkhako satimā sukhavihārī’ti tatiyaṃ jhānaṃ upasampajja viharati.

And with the fading away of rapture, they enter and remain in the third absorption, where they meditate with equanimity, mindful and aware, experiencing for themselves the bliss of which the noble ones declare, ‘Equanimous and mindful, one meditates in bliss.’