Spoken words do not return

Once a farmer said bad to his neighbors, but when he realized his mistake later he went to a saint. He asked the sage to withdraw his words.

The saint said to the farmer, "Gather lots of feathers and keep them in the middle of the city." The farmer did the same thing and then reached the saint.

Then the saint said, "Now go and bring those wings back and bring it back"

The farmer went back, but till then all wings had flown around the air. And the farmers came empty handed to the saint. Then the saint told him that the same thing happens with the words you said, you can easily remove them from your mouth, but you can not even take it back if you want to.