Visuddhimagga XIV-19

Catutthattike attano khandhe gahetvā āraddhā vipassanā paññā ajjhattābhinivesā.

（4）（内住慧、外住慧、内外住慧）在第四的三法中：取自己的诸蕴来勤修的观慧，是「内住慧」。

Ñ(XIV,19): 10. In the fourth triad, insight-understanding initiated by apprehending one's own aggregates is interpreting the internal.

Parassa khandhe bāhiraṃ vā anindriyabaddharūpaṃ gahetvā āraddhā bahiddhābhinivesā.

取他人的诸蕴或取与根不相连的外色（物质）来勤修的观慧，是「外住慧」。

Ñ: That initiated by apprehending another's aggregates or external materiality not bound up with the faculties, [that is, inanimate matter], is interpreting the external.

Ubhayaṃ gahetvā āraddhā ajjhattabahiddhābhinivesāti

取（内外）二者来勤修的观慧，是「内外住慧」。

Ñ: That initiated by apprehending both is interpreting the internal and external.

evaṃ ajjhattābhinivesādivasena tividhā.

如是依内住等为三种。

Ñ: So it is of three kinds as interpreting the internal, and so on.