Sangitisutta 3.3.29

3.3.29

Puna caparaṃ, āvuso, bhikkhu satimā hoti paramena satinepakkena samannāgato cirakatampi cirabhāsitampi saritā anussaritā.

Furthermore, a mendicant is mindful. They have utmost mindfulness and alertness, and can remember and recall what was said and done long ago.