Passage
Digha Nikaya 1 (dn1:1.33.2)
pli dn
Idha, bhikkhave, ekacco samaṇo vā brāhmaṇo vā ātappamanvāya padhānamanvāya anuyogamanvāya appamādamanvāya sammāmanasikāramanvāya tathārūpaṁ cetosamādhiṁ phusati, yathāsamāhite citte anekavihitaṁ pubbenivāsaṁ anussarati.