Monks, there are these six sense bases.

What six?

The eye, the ear, the nose, the tongue, the body, the mind.

When, Monks, a Noble Disciple understands as they really are the gratification, the danger, and the escape in the case of these six sense bases;

Then he is called a Noble Disciple who is a Stream-Enterer, no longer bound to the nether world, fixed in destiny, with Nibbāna (Enlightenment) as his destination.

(Reference: SN 23.7)

In this Teaching from Gotama Buddha, he shares The Six Sense Bases.

The Six Sense Bases are the eye, ear, nose, tongue, body, and mind. These are more specifically referred to as The Six Internal Sense Bases. These are the internal organs that, through contact, bring experiences to the awareness of the mind.

The Six Internal Sense Bases experience forms, sounds, odors, flavors, physical objects, and mental objects. These are more specifically referred to as The Six External Sense Bases.