Sangitisutta 1.8.4

1.8.4

Ayaṃ kho, āvuso, tena bhagavatā jānatā passatā arahatā sammāsambuddhena eko dhammo sammadakkhāto.

These are the teachings grouped by one that have been rightly explained by the Blessed One, who knows and sees, the perfected one, the fully awakened Buddha.