Visuddhimagga II-2

Bhagavatā hi pariccattalokāmisānaṃ kāye ca jīvite ca anapekkhānaṃ anulomapaṭipadaṃyeva ārādhetukāmānaṃ kulaputtānaṃ terasadhutaṅgāni anuññātāni.

为那些舍离世间染着不惜身命而欲勤得随顺行（毗钵[pí bō]舍那）的善男子，世尊听许他们受持十三头陀支。

[THE 13 KINDS OF ASCETIC PRACTICES]

Ñ(II,2): Thirteen kinds of ascetic practices have been allowed by the Blessed One to clansmen who have given up the things of the flesh and, regardless of body and life, are desirous of undertaking a practice in conformity [with their aim].

Chew: According to Chinese translation, 'practice in conformity' is one of the Vipassanā ñāṇa. Han: I assume that the Pāḷi word for 'practice in conformity' is 'anulomapaṭipadaṃyeva'. In Abhidhamma books, "anuloma ñāṇa" (the knowledge of adaptation to the Path) is one of the vipassanā ñāṇas.

Seyyathidaṃ – paṃsukūlikaṅgaṃ, tecīvarikaṅgaṃ, piṇḍapātikaṅgaṃ, sapadānacārikaṅgaṃ, ekāsanikaṅgaṃ, pattapiṇḍikaṅgaṃ, khalupacchābhattikaṅgaṃ, āraññikaṅgaṃ, rukkhamūlikaṅgaṃ, abbhokāsikaṅgaṃ, sosānikaṅgaṃ, yathāsanthatikaṅgaṃ, nesajjikaṅganti.

即（一）粪扫衣支，（二）三衣支，（三）常乞食支，（四）次第乞食支，（五）一座食支，（六）一钵食支，（七）时后不食支，（八）阿练若住支，（九）树下住支，（十）露地住支，（十一）冢[zhǒng]间住支，（十二）随处住支，（十三）常坐不卧支。

Ñ: They are:

i. the refuse-rag-wearer's practice,

ii. the triple-robe-wearer's practice,

iii. the alms-food-eater's practice,

iv. the house-to-house-seeker's practice,

v. the one-sessioner's practice,

vi. the bowl-food-eater's practice,

vii. the later-food-refuser's practice,

viii. the forest-dweller's practice,

ix. the tree-root-dweller's practice,

x. the open-air-dweller's practice,

xi. the charnel-ground-dweller's practice,

xii. the any-bed-user's practice,

xiii. the sitter's practice.