While it is true that this verse is used in various cases to acquit someone
who is suspected of killing where there is any possible way to vindicate
him, it does not seem necessary to invoke the verse in order to exempt the
person from a Chiyuv Misah in the case of a Safek. In the case of a Safek,
the person cannot be punished, because we simply do not know for sure that
he is a Rotze'ach! That is the reason for being lenient in a case of Safek
Nefashos. Even in cases of monetary matters, we do not make a person pay
money when there is a doubt. Certainly, then, we may not execute a person
when there is a Safek in a case of Dinei Nefashos! Why does Rashi not give
this simple reason? (TOSFOS Bava Basra 50b, DH Safek).
(a) RAV ELCHANAN WASSERMAN, Hy'd, in KOVETZ SHI'URIM (Bava Basra #223)
answers that the Rashbam there (and Rashi here) are explaining that the
person is not merely exempt mi'Safek because we are not sure whether he
deserves punishment. Rather, he is *Vadai Patur* -- he is *definitely*
exempt, as if there were no Safek, because the Torah says that in a case of
Dinei Nefashos where we have a doubt, the person is *definitely* exempt from
Chiyuv Misah. This is what the verse, "v'Hitzilu ha'Edah," tells us. (This
is similar to the Gezeiras ha'Kasuv of the Torah that a Safek Tum'ah in
Reshus ha'Rabim is deemed to be definitely Tahor.)
Why is it necessary for the Torah to exempt him b'Vadai? Even without a
definite Petur from Misah, he would be Patur from Misah because of the
general principle that we cannot give a person Misah out of doubt!
Rav Elchanan says that there are several ramifications of whether he is
Patur mi'Safek or Patur b'Vadai. In the case of a Shor ha'Niskal, an ox that
must be put to death because it killed a person, the rule (based on a
Hekesh) is that the ox is put to death only in a situation in which a person
would have been put to death had a person committed the same act. In a case
where there is a Safek whether the Shor needs to be killed, do we kill it or
not? If a person, in a case of a Safek Dinei Nefashos, is exempt from Misah
only because we cannot administer the Chiyuv Misah out of doubt, then we
*could* kill the Shor out of doubt, because, in contrast to giving Misah to
an innocent person, there is no Isur Retzichah per se involved in killing an
innocent Shor if the Shor is not deserving of death. But if the Torah tells
us that a person is exempt *b'Vadai* in a case of Safek Nefashos, then the
Shor should also be exempt because of the Hekesh.
Another difference, says Rav Elchanan, whether a person is Patur mi'Safek or
Patur b'Vadai is whether the principle of "Kim Lei b'd'Rabah Minei" applies
in a case of Safek. The principle of "Kim Lei" tells us that when a person
became Chayav for two punishments (such as Misah and a monetary payment) at
one time, he is only obligated to receive the larger, more severe
punishment. If a person becomes Chayav to pay money at the same time he
becomes *Safek* Chayav Misah, then if he is exempt from Misah only because
of a Safek, then he remains exempt from paying money because, mi'Safek, we
cannot make him pay (because perhaps in truth he is really Chayav Misah
which would exempt him from the payment, and thus the person to whom he owes
the money must bring proof that he is *definitely* Patur from Misah). A
Safek Chiyuv Misah is enough to exempt him from payment. If, however, he is
*definitely* exempt from Misah, then he should have to pay the money because
there is no punishment of Misah, not even mi'Safek, to exempt him.
Perhaps it was necessary for Rashi to mention the verse, "v'Hitzilu
ha'Edah," in our Sugya because of the question of Tosfos. Tosfos (DH
v'Safek) asks that according to the opinion that holds "Hasra'as Safek Shmah
Hasra'ah" -- a Hasra'ah given to a person when what he is about to do is a
Safek Aveirah is nevertheless a valid Hasra'ah (to make him liable to
punishment) -- the person should be Chayav in this case (since we see that a
Jew actually was killed, even though it was a Safek to the perpetrator at
the time that he threw the rock).
Rashi might be answering this question and saying that since there is a
definite Petur of "v'Hitzilu ha'Edah," the Hasra'ah here is not considered a
Hasra'ah at all, since no Aveirah was done at all, even according to the
opinion that says Hasra'as Safek normally is a valid Hasra'ah.
(b) However, this approach is problematic. First, this approach does not
explain why the Rashbam in Bava Basra needs to mention the verse of
"v'Hitzilu ha'Edah" in that Sugya. There, it would suffice to say that Beis
Din may not punish a person with Misah out of doubt.
Second, in the case of Shor ha'Niskal, why would we kill the Shor mi'Safek?
The owner of the ox has a Chezkas Mamon, and we should say that the ox is
not killed mi'Safek, and since it is not killed it should not be Asur to
derive benefit from it. ?Moreover, even if a man's Petur from Misah is
mi'Safek, there is still reason to say that the Hekesh exempts the Shor from
Misah in a similar case of Safek, because the Hekesh says that whenever
person is exempt, a Shor is also exempt!
Third, the case of "Kim Lei" should also not be affected by whether the
person is exempt mi'Safek or exempt b'Vadai. According to those who say that
one who killed inadvertently and is not Chayav Misah is still exempt from
monetary payments because of "Kim Lei," why is our case of a Safek Chiyuv
Misah any less than a case of one who killed inadvertently? It should still
be treated like a Safek, and even though he is definitely Patur from Misah,
the very fact that he killed should exempt him from paying!
According to the opinion that one who killed inadvertently is *not* exempt
from paying (because he holds that "Kim Lei" does not apply when the Aveirah
was done b'Shogeg), then it is obvious that he should be *Chayav* to pay
even if the Petur from Misah is only mi'Safek, because "Kim Lei" can only
exempt a person from paying if we are *applying* a punishment of Misah, but
it cannot exempt him from paying if the Chiyuv Misah cannot be applied in
practice.
In our Sugya as well, the verse of "v'Hitzilu ha'Edah" cannot be applied to
exempt a person from Misah according to the opinion that Hasra'as Safek is a
valid Hasra'ah. "V'Hitzilu ha'Edah" is only a Petur from punishment when we
are not sure that the person has killed; it does *not* make the Aveirah of
throwing a rock into a crowd of people any less of an Aveirah if it turns
out that it caused someone's death. The Aveirah is the same Aveirah; it is
just exempt from Misah. Since, in this case, we know that his act eventually
killed someone, "v'Hitzilu ha'Edah" cannot exempt him from Misah, because
the Hasra'ah was a valid Hasra'ah according to the opinion that says
"Hasra'as Safek Shmah Hasra'ah!"
We find that Rashi in other places makes similar statements regarding the
reason why a person is exempt in a case of Safek. Rashi in Yevamos (99b, DH
Ein Sofgin) writes that if a Safek Kohen becomes Tamei for a Mes, he does
not receive Malkus because the Hasra'ah was a Hasra'as Safek. Why does Rashi
there not say that the reason the person is exempt from Malkus is because we
cannot punish a person when we do not know for certain that he committed a
crime?
Rashi makes the same statement about Chiyuv Malkus in Chulin (23b, end of DH
Ela d'Rebbi Yehudah; 80a, DH Hasra'as Safek; 86b, DH sh'Eino Sofeg).
Apparently, Rashi learns that the principle that we must be stringent with a
Safek d'Oraisa is a rule *d'Oraisa*, like many other Rishonim maintain (see
Rashba, Chulin 9b, and Shav Shmaisa 1:1), in contrast to the view of the
Rambam. Therefore, even though in a case of a Safek in a monetary matter we
do not make a person pay mi'Safek, that is because we do not know for sure
that he owes money. The same should apply when we are not sure whether a
person killed or not (for example, we are not sure whether this person
killed, or another person killed). The person is Patur from Misah because we
do not know for sure that he is guilty. But when the person did an act which
he knew was an act of a Safek Aveirah, then perhaps when the Torah says that
it is Asur d'Oraisa to perform a Safek Aveirah, the Torah might mean that it
is Asur and it *has the same status as a definite Aveirah.* The Mitzvah in
the Torah that tells him not to do an Aveirah when it is Vadai is the same
Mitzvah that tells him not to do an Aveirah when it is a Safek! If so, he
should also be punished for the Aveirah that he did (even though it was a
Safek at the time he did the act), since he did an act that he knows the
Torah prohibits. That is why Rashi writes that in the case of Malkus, he is
Patur from punishment because of Hasra'as Safek, and in the case of Safek
Nefashos (in our Gemara), he is Patur because of "v'Hitzilu ha'Edah."
This leaves just one question, though. Why does Rashi here need to write the
new reason of "v'Hitzilu ha'Edah," and it does not suffice to say that the
reason is because of Hasra'as Safek? We cannot answer that it is because
there is an opinion that says "Hasra'as Safek *Lo* Shmah Hasra'ah," because
this type of Hasra'as Safek is not a Hasra'ah according to everyone (even
according to Reish Lakish, who says that a normal case of Hasra'as Safek is
a valid Hasra'ah). Why, then, does Rashi have to give a new reason and not
the reason of Hasra'as Safek?
It seems that Rashi learns from the wording of the Gemara, "Safek Nefashos
l'Hakel," that the Petur here is a specific exemption in the laws of Dinei
Nefashos (and it does not apply elsewhere, such as to exempt a person in a
case of Malkus). Why, though, does the *Gemara* give a new reason to exempt
a person from Misah in the case of a Safek Aveirah? Why does the usual
reason of Hasra'as Safek, which exempts a person in a case of Malkus, not
suffice to exempt him here as well?
Apparently, the reason of Hasra'as Safek will not exempt a person from
*Misah* because there is a difference in the nature of the Hasra'os for
*Misah* and for *Malkus*. Rashi (Shavuos 20b, DH v'Azharasei) tells us that
the person who gives the Hasra'ah must mention the verse in the Torah which
the sinner is about to transgress. When giving Hasra'ah for Misah, does one
have to mention the prohibition in the Torah for the act that the person is
about to commit? The Gemara in Sanhedrin (8b) says that he must mention only
what the *punishment* for the act is, but we do not find that he must
mention the specific verse in the Torah which prohibits the act. It could be
that when it comes to a punishment of Misah, the purpose of the Hasra'ah is
to mention what the punishment is, without mentioning the verse describing
the prohibition. The only reason he must mention the prohibition when giving
Hasra'ah for Malkus is because he needs to show where we find the punishment
of Malkus in the Torah for the act that the sinner is doing (since the
Malkus for every Lo Ta'aseh is learned from Lo Tachsom; by mentioning the
verse of the Lo Ta'aseh that the person is about to do, one thereby shows
that it its Malkus is derived from the Lo Ta'aseh of Lo Tachsom). Since he
has to mention the verse of the prohibition in the case of a Lo Ta'aseh, and
the Aveirah that the person is doing is only a Safek, the verse (which
prohibits a Vadai Aveirah) that he is mentioning for the Hasra'ah is *not*
referring to the act that the sinner is doing (which is a Safek Aveirah).
Hence it is a Hasra'as Safek and the sinner cannot be punished for it. In
contrast, when giving Hasra'ah for a Chiyuv Misah, in which he does not
mention the prohibition in the Torah but only the punishment, it is not a
Hasra'as Safek, because he will certainly get the punishment if he does
commit the Aveirah! That is why it needs a separate Petur of "v'Hitzilu
ha'Edah."