Saṅgītisutta

Suttapiṭaka · Dīghanikāya · Pāthikavagga · Vol. 11 · Section 248

[248] Four modes of practice (paṭipadā): 1. Painful practice with sluggish direct knowledge (dukkhāpaṭipadā dandhābhiññā) 2. Painful practice with swift direct knowledge (dukkhāpaṭipadā khippābhiññā) 3. Pleasant practice with sluggish direct knowledge (sukhāpaṭipadā dandhābhiññā) 4. Pleasant practice with swift direct knowledge (sukhāpaṭipadā khippābhiññā)

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 21 · Section 161 — Paṭipadāvagga