Dhamma Verses (Dhammapada, KN 2)

2: The Chapter about Heedfulness – 36
The heedful speed ahead
Two monks were given a meditation subject by the Buddha;
one spent his time on monastic duties like sweeping, while the
other was diligent and became an Arahat; after the Rains
Retreat the Buddha commended him and spoke this verse
about him.
29. Appamatto pamattesu, suttesu bahujāgaro,
abalassaṁ va sīghasso hitvā, yāti sumedhaso.
Heedful amongst the heedless ones,
wakeful amongst the ones who sleep,
like a swift horse who abandons
a weak horse, the true sage moves on.