This is a question is referenced the Gemara or Mishna I think.
I believe in the mishna, or gemara there's a story about either Rebbe Yehuda or Rebbe Yosi(Or another head of the Beis Din).
The story goes that the Romans I believe, sent word to the Rebbe's court that the Rebbe was to be killed. They gave him a few days to ponder on it. His students urged him to go into hiding but he wanted to figure out if the decree was from Shamayim.
The Rebbe was trying to figure out the reason for the decree. One student said maybe you forgot to say shema one day, and the rebbe said no I never forgot shema. One student said maybe you forgot to put tefillin once, and the Rebbe said no I never forgot that. One student said maybe you issued a bad ruling, and the Rebbe said no I never issued a bad ruling. And then one student said maybe you didn't observe the laws of a widow once. And the Rebbe thought about it and said you know what? Once there was a widow that came to my court and I paused to take a sip of water before I heard her case.
The Rebbe realized at that moment that the decree was from shamayim and he was satisfied.
The exact rabbi, students responses, etc., and the details may be a little off.
I can't figure out where this story is. Do you have any idea where it's written or where it comes from? Which rabbi is it talking about?
If it's not in the Gemara or Mishna, if you can tell me which sefer that would be great. I'd like the volume, daf, page number, or whatever info you can give me. Thanks.