kill the goose that lays the golden eggs
Destroy a source of riches through stupidity or greed, as in If he never gives his loyal customers a break on some items in his store, he'll kill the goose that lays the golden eggs. This expression, already a proverb in the late 1400s, alludes to Aesop's fable about a farmer whose goose lays one golden egg a day, and who kills the goose in the mistaken belief that he'll get all the eggs at once.
Words nearby kill the goose that lays the golden eggs
kill off,
kill or cure,
kill shot,
kill switch,
kill the fatted calf,
kill the goose that lays the golden eggs,
kill time,
kill two birds with one stone,
kill with kindness,
kill-joy,
kill-time