[160] **"Of suffering" (dukkhassa)** means: one is contemplating the source (pabhava) of the suffering of birth, the suffering of aging, the suffering of illness, the suffering of death, and the suffering of sorrow, lamentation, pain, grief, and despair — that is, one contemplating the root, contemplating the cause, contemplating the origin (nidāna), contemplating the production (sambhava), contemplating the source, contemplating the origination (samuṭṭhāna), contemplating the nutriment (āhāra), contemplating the object (ārammaṇa), contemplating the condition (paccaya), contemplating the origin (samudaya).
Contemplation (anupassanā) is called wisdom (paññā): that wisdom which is understanding … non-delusion, investigation of dhammas (dhammavicaya), right view. One who is endowed with this contemplation, this wisdom — possessed of it, come to it, fully come to it, arrived at it, fully arrived at it, furnished with it — that one is called "one who contemplates." Hence, "contemplating birth as the source of suffering (dukkha)."
Therefore the Blessed One said:
Whoever, indeed, not knowing, creates an acquisition (upadhi) —
that dullard comes to suffering again and again.
Therefore, understanding, one should not create an acquisition,
contemplating birth as the source of suffering.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.