Dukkarasutta

Suttapiṭaka · Saṁyuttanikāya · Sagāthāvaggasaṁyutta · Vol. 15 · Section 36

[36] "Hard to do and hard to endure is the ascetic life (sāmañña) for one who is inept; for many are the obstructions therein, where the fool founders."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.