Watch Urn Making
Once two men went to a potter's field where they watched a tread-wheel making urns. They were delighted at seeing the work without satiety. One then left for the great assembly where he was well received with excellent food and got precious teachings as well. The other stayed on at the plant and said, "I'll get a good look at how urns are made."
Thus he stayed till the sun set without realizing how hungry he really was or how chilly it had gotten.
So are the stupid who engage themselves in their housework without being aware that all things are subject to change.