The Tipiṭaka in Three Languages

Gaṅgādipeyyālahaṅasatipaṭṭhānasaṅyuta

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 839

[839] Bhikkhus, just as the river Gaṅgā slants toward the east, slopes toward the east, inclines toward the east, so too, bhikkhus, a bhikkhu developing the four establishments of mindfulness (satipaṭṭhāna), making much of the four establishments of mindfulness, slants toward Nibbāna, slopes toward Nibbāna, inclines toward Nibbāna.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places