Indeed, all conditioned things are impermanent,
prone to arise and pass away.
Having arisen, they cease;
their coming to rest is truest bliss.

Aniccā vata saṅkhārā
uppādavayadhammino
Uppajjitvā nirujjhanti
tesaṁ vūpasamo sukho.

D. II. 199

Monks, all conditioned things are of a nature to decay;
fulfil all your endeavours through diligence.

Vayadhammā saṅkhārā, appamādena sampādetha.

D. II. 120