Dasuttarasutta

Suttapiṭaka · Dīghanikāya · Pāthikavagga · Vol. 11 · Section 424

[424] What six dhammas should be completely understood? The six internal sense bases (āyatana): the eye base, the ear base, the nose base, the tongue base, the body base, and the mind (mano) base. These six dhammas should be completely understood.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.