Today I regret for a sparrow was wandering around running ceiling fan.
Even I had noticed and think to turn it off but I forget.
I don't care if it was my bad karma which is not important than saving a sparrow but does really a matter for saving it then it wasn't a bad karma.
I'm not afraid if I've break precept or my bad krama, what else I need to pay for it.
I can't revert a time neither get a sparrow alive.
I don't have anything left than regret.
Does it worth?
Anything defined in sutta about regret or what Lord Buddha said about regret?