Paṭhamarukkhasutta

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 1070

[1070] Bhikkhus, just as, of whatever trees there are in Jambudīpa, the rose-apple tree (jambū) is declared the chief of them; even so, bhikkhus, of whatever dhammas there are that partake of awakening (bodhipakkhiyā dhammā), the faculty of wisdom (paññindriya) is declared the chief of them, that is, for awakening.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 2 other places

Vol. 19 · Section 1081 — Catuttharukkhasutta
Vol. 19 · Section 1041 — Sārasutta