Digha Nikaya 2:151
SUJATOSantaṁ vā ajjhattaṁ dhammavicayasambojjhaṅgaṁ ‘atthi me ajjhattaṁ dhammavicayasambojjhaṅgo’ti pajānāti, asantaṁ vā ajjhattaṁ dhammavicayasambojjhaṅgaṁ ‘natthi me ajjhattaṁ dhammavicayasambojjhaṅgo’ti pajānāti, yathā ca anuppannassa dhammavicayasambojjhaṅgassa uppādo hoti tañca pajānāti, yathā ca uppannassa dhammavicayasambojjhaṅgassa bhāvanāya pāripūrī hoti tañca pajānāti.
When they have the awakening factor of investigation of principles …