Bava Kamma, Chapter 2, Mishnah 6 - the last Mishnah in the chapter, which discusses the last of the five cases listed in the previous Mishnah, where the damager is liable to pay full damages: the case of a person.
The text of the Mishnah:
"Adam mu'ad le'olam" - a person is always responsible for his actions, and if he damages his fellow's property, he must pay full damages as compensation.
"Bein shogeg, bein mezid" - there is no practical difference whether he damaged intentionally or unintentionally; in both cases, he is liable for full payment.
"Bein er, bein yashen" - there is no practical difference whether he was awake or asleep. Even a sleeping person, who tossed in his sleep and knocked over the lamp resting on his host's nightstand, is liable for the cost of its replacement. The fact that he was asleep at the time and had no intention whatsoever to cause damage does not exempt him - the responsibility rests upon him, and he must be careful even when he goes to sleep.
"Sima et ein chavero veshiber et hakelim - meshalem nezek shalem" - whether he tossed in his sleep and blinded his fellow's eye, or whether he broke a utensil like that lamp on the nightstand, his obligation is to pay full damages.
An exception - absolute unavoidable accident:
If another person placed the lamp next to the bed after the sleeper had already fallen asleep, and the sleeper did not know of its existence at all when he went to sleep, then he is exempt, since he could not do anything to prevent the damage. This is an absolute unavoidable accident, and the responsibility rests upon the one who placed the lamp next to the sleeper.
Why is "blinded his fellow's eye" mentioned here?
Seemingly this is not the place for this law, as it deals with bodily injury and not property damage. One who injures his fellow does not pay for damages alone - the amount by which his value was reduced, as the value of a slave, so to speak - rather he is liable for four additional payments, which we will discuss in the eighth chapter:
Shevet - unemployment, the loss of workdays.
Ripui - medical expenses.
Boshet - the humiliation he caused him.
Tza'ar - the actual pain and suffering he caused him.
We find that the law of one who injures is more complex, and it does not belong in this chapter at all. The reason it was mentioned here is that when a person injures his fellow completely accidentally, he is liable to pay damages - and this is the novel point of the Mishnah, "mu'ad le'olam" - but he is exempt from the other categories. To be more precise, the intention is not just any accident, but someone who was asleep or in a sleep-like state; however, a person who is awake is liable for the other payments as well, even if he caused the damage by mistake. It is also worth noting that the payment for Boshet is only paid when the damager intended to cause damage.
In summary: With this we conclude the second chapter of Bava Kamma. In the third chapter we will return to the topic of Bor.