The Discourse giving the Analysis of the Topics

Arthaviniścayasūtram

4. The Twelve Sense-Spheres

Herein, monastics, what are the twelve sense-spheres?

They are as follows:

  1. The internal eye sense-sphere,
  2. the external visible-form sense-sphere,
  3. the internal ear sense-sphere,
  4. the external sound sense-sphere,
  5. the internal nose sense-sphere,
  6. the external smell sense-sphere,
  7. the internal tongue sense-sphere,
  8. the external taste sense-sphere,
  9. the internal body sense-sphere,
  10. the external tangible sense-sphere,
  11. the internal mind sense-sphere,
  12. the external thought sense-sphere.

These, monastics, are said to be the twelve sense-spheres.