Passage
Itivuttaka 17 (iti17:2.1)
pli iti
“Sekhassa, bhikkhave, bhikkhuno appattamānasassa anuttaraṁ yogakkhemaṁ patthayamānassa viharato bāhiraṁ aṅganti karitvā nāññaṁ ekaṅgampi samanupassāmi yaṁ evaṁ bahūpakāraṁ yathayidaṁ, bhikkhave, kalyāṇamittatā.