Rahogatavagga

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 1263

[1263] Setting at Sāvatthī. Then, while the Venerable Anuruddha was alone in seclusion, a reflection arose in his mind thus: "Whosoever have neglected the four establishments of mindfulness (satipaṭṭhāna) have neglected the noble path leading rightly to the destruction of suffering (dukkha); whosoever have undertaken the four establishments of mindfulness have undertaken the noble path leading rightly to the destruction of suffering."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 19 · Section 1253 — Anuruddhasaṅyuta