Visuddhimagga VI-29

Tatridaṃ upalakkhaṇavidhānaṃ, sace tassa nimittassa samantā cakkhupathe pāsāṇo hoti, so ‘‘ayaṃ pāsāṇo ucco vā nīco vā khuddako vā mahanto vā tambo vā kāḷo vā seto vā dīgho vā parimaṇḍalo vā’’ti vavatthapetabbo.

其考察的方法如次：若在不净相的周围看见有石头，应该确定这石头的高、低、大、小、赤、黑、白、长及圆等。

Ñ(VI,29): These are the directions for characterizing them. If there is a rock in the eye's focus near the sign, he should define it in this way: 'This rock is high or low, small or large, brown or black or white, long or round',

Tato ‘‘imasmiṃ nāma okāse ayaṃ pāsāṇo idaṃ asubhanimittaṃ, idaṃ asubhanimittaṃ ayaṃ pāsāṇo’’ti sallakkhetabbaṃ.

此后应该观察：「在这个地方是这个石头，这边是不净相；这边是不净相，这里是石头。」

Ñ: after which he should observe [the relative positions] thus: 'In this place, this is a rock, this is the sign of foulness; this is the sign of foulness, this is a rock'.