sn40.4:1.1 “‘Catutthaṁ jhānaṁ, catutthaṁ jhānan’ti vuccati.
sn40.4:1.2 Katamaṁ nu kho catutthaṁ jhānanti?
sn40.4:1.3 Tassa mayhaṁ, āvuso, etadahosi:
sn40.4:1.4 ‘idha bhikkhu sukhassa ca pahānā dukkhassa ca pahānā pubbeva somanassadomanassānaṁ atthaṅgamā adukkhamasukhaṁ upekkhāsatipārisuddhiṁ catutthaṁ jhānaṁ upasampajja viharati.
sn40.4:1.5 Idaṁ vuccati catutthaṁ jhānan’ti.
sn40.4:1.6 So khvāhaṁ, āvuso, sukhassa ca pahānā dukkhassa ca pahānā pubbeva somanassadomanassānaṁ atthaṅgamā adukkhamasukhaṁ upekkhāsatipārisuddhiṁ catutthaṁ jhānaṁ upasampajja viharāmi.
sn40.4:1.7 Tassa mayhaṁ, āvuso, iminā vihārena viharato sukhasahagatā saññāmanasikārā samudācaranti.