"A man came to Him one day, as people in trouble were wont to do, and told him that he had great difficulty with his meditation, which he could scarcely succeed in doing at all. Then the Buddha told him that there was a very simple reason for it—that in a previous life he had foolishly been in the habit of annoying certain holy men and disturbing their meditations. p. 188"
January 1, 1970
https://en.wikiquote.org/wiki/Gautama_Buddha