Ariyamaggasutta 3.2

3.2

Idha, bhikkhave, ekacco abyābajjhaṃ kāyasaṅkhāraṃ abhisaṅkharoti …pe… idaṃ vuccati, bhikkhave, kammaṃ sukkaṃ sukkavipākaṃ.

It’s when someone makes pleasing choices by way of body, speech, and mind. These are called bright deeds with bright results.