user567: 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?   

user295: Thinking about what you could have done and should have not done is part of Nīvaraṇa more particularly Uddhacca,kukkucca. Since you cannot turn back time or remedy the situation it is best you do not worry about this. Worrying will aggravate the situation.
If you knew the sparrow was in danger but chose it to ignore it this is negligence. This does not amount to killing but this may have karmic consequences.
If you did not occur that the sparrow was in danger and if hit the fan and died there is no karmic consequences.

567: <p>Today I regret for a sparrow was wandering around running ceiling fan.<br>
Even I had noticed and think to turn it off but I forget.  </p>

<p>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.  </p>

<p>I'm not afraid if I've break precept or my bad krama, what else I need to pay for it.  </p>

<p>I can't revert a time neither get a sparrow alive.<br>
I don't have anything left than <strong>regret</strong>.<br>
Does it worth?  </p>

<p>Anything defined in sutta about regret or what Lord Buddha said about <strong><em>regret</em></strong>?   </p>
 295: <p>Thinking about what you could have done and should have not done is part of <a href="http://www.themindingcentre.org/dharmafarer/wp-content/uploads/2010/02/32.1-Nivarana.-piya.pdf" rel="nofollow noreferrer">Nīvaraṇa</a> more particularly <a href="http://www.themindingcentre.org/dharmafarer/wp-content/uploads/2018/09/32.7-Uddhaccakukkucca-piya.pdf" rel="nofollow noreferrer">Uddhacca,kukkucca</a>. Since you cannot turn back time or remedy the situation it is best you do not worry about this. Worrying will aggravate the situation.</p>

<p>If you knew the sparrow was in danger but chose it to ignore it this is negligence. This does not amount to killing but this may have karmic consequences.</p>

<p>If you did not occur that the sparrow was in danger and if hit the fan and died there is no karmic consequences.</p>
