Cetokhilasutta 7.1

7.1

Seyyathāpi, bhikkhave, kāḷapakkhe candassa yā ratti vā divaso vā āgacchati, hāyateva vaṇṇena hāyati maṇḍalena hāyati ābhāya hāyati ārohapariṇāhena;

It’s like the moon in the waning fortnight. Whether by day or by night, its beauty, roundness, luminosity, and diameter and circumference only decline.