The Tipiṭaka in Three Languages

Paññāvaggavivekkathā

Suttapiṭaka · Khuddakanikāya · Paṭisambhidāmagga · Vol. 31 · Section 701

[701] Just as, bhikkhus, whatever actions requiring strength are done, they are all done in dependence on the earth, standing upon the earth — it is thus that these actions requiring strength are done; even so, bhikkhus, a bhikkhu, in dependence on virtue (sīla), established upon virtue, develops the Noble Eightfold Path (ariya aṭṭhaṅgika magga) and cultivates the Noble Eightfold Path.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places