First, what did Rav Bruna mean when he said that a person who washed his
hands may not recite Kidush? Why should he not be able to recite Kidush?
(a) RASHI and the RASHBAM explain that one who washed his hands should not
recite Kidush because Kidush would then be an interruption, a Hesech
ha'Da'as, between washing his hands and reciting ha'Motzi. What, then,
should one do if he washed his hands before Kidush? The Rashbam says that he
should have someone else recite Kidush for him so that he does not have to
interrupt by reciting it himself. (The Rashbam points out that the entire
situation of washing before Kidush is b'Di'eved; one should not wash before
Kidush, as the Gemara says in Shabbos (51b), according to Beis Hillel.)
The Gemara proves that this is not true -- Kidush is *not* considered an
interruption. We see that Rav would wash his hands and then make Kidush over
the bread. If Kidush is considered an interruption between washing and
saying ha'Motzi, how could Rav make Kidush over bread? His Kidush would be
an interruption between washing and reciting ha'Motzi and eating the bread!
(Although the recitation of Kidush in that case is made for the sake of
being able to eat the bread, TOSFOS (DH Mekadesh) suggests that Rav would
sometimes wash with intention to make Kidush on bread, and afterward he
would change his mind and make Kidush not on bread but on wine. The fact
that Rav did not refrain from washing first even though he might change his
mind is the Gemara's proof that Kidush is not an interruption between
washing and eating the bread. See also CHAZON YECHEZKEL for another approach
to the Rashbam's opinion.)
(b) TOSFOS (DH ha'Notel) quotes RABEINU ELCHANAN who explains that Rav Bruna
means that if a person washes his hands, he should not make Kidush on wine
because it will look like arrogance, for the Gemara (Chulin 106a) says that
a person who washes his hands for fruit (or fruit juice, such as wine) is
considered arrogant. Instead, one should make Kidush on bread if he washed
his hands before Kidush.
The Gemara disproves this by showing that Rav used to wash his hands *before
choosing* whether to make Kidush on bread or on wine, and even after he
washed he would sometimes make Kidush on wine. (Even though the Gemara does
not say that Rav would wash his hands before choosing, this is the way we
must read the Gemara according to Rabeinu Elchanan.)
(c) RABEINU TAM cited in Tosfos explains that Rav Bruna maintained that
Kidush *does not need to be b'Makom Se'udah*. Since one does not have to
recite Kidush in the place where he eats his meal, he should not wash his
hands before Kidush, because perhaps he will decide not to eat yet (since he
is not obligated to eat after reciting Kidush), and his blessing of "Netilas
Yadayim" will be a Berachah l'Vatalah.
When the Gemara disproves this by showing that Rav sometimes make Kidush on
bread, it does not mean that Rav would actually recite his Kidush over the
bread. Rabeinu Tam asserts that Kidush cannot be recited on bread. Rather,
it means that he would sometimes eat a meal after reciting Kidush and
sometimes he would not, because he held that Kidush does not need to be
b'Makom Se'udah (101a). Rav washed before making his choice, and that proves
that one *may* wash before Kidush, even though it does not need to be
b'Makom Se'udah (that is, we are not afraid that after washing his hands he
will decide not to eat).
(d) The BA'AL HA'ME'OR says that this Sugya is connected to the following
Sugya. The following Sugya discusses whether a person may make Kidush or
Havdalah if he already began to eat (which he was not allowed to do). Rav
Bruna states that not only if a person eats before reciting Kidush is he not
allowed to recite Kidush (like Rav Yosef in the name of Shmuel holds), but
even if he merely washes his hands in preparation to eat, he may not recite
Kidush. The reason is because eating before Kidush is a disgrace to the
Kidush, and doing an action in preparation to eat, such as washing one's
hands, before Kidush is also a disgrace to Kidush.
The Gemara refutes this by showing that Rav would wash his hands and would
make Kidush on bread. If it is true that washing before Kidush is a disgrace
to Kidush, then Rav should not have been able to make Kidush on bread at
all. (According to the Ba'al ha'Me'or, this Sugya is not in accordance with
the Halachah, because the Halachah is that one who eats before Kidush may
still recite Kidush.)
(e) The RIF makes an unclear statement in explaining this Gemara, and the
Rishonim argue about what he means to say. The Rif writes, "We see from Rav
that Kidush depends on personal preference and not on Netilas Yadayim." What
does he mean?
The RA'AVAD says that when Rav Bruna says "one who washed his hands may note
make Kidush," he means that one may not make Kidush on *wine* after washing
his hands, because washing his hands shows that he plans to make Kidush on
bread. Once he decided not to make Kidush on wine, he cannot change his mind
and he must make Kidush on bread. The Gemara then shows that Rav used to
decide whether to make Kidush on wine or bread even *after* he washed his
hands, which shows that it "depends on Chavivus (what one prefers) and not
on Netilas Yadayim."
(f) The RAN suggests a different interpretation of the Rif. Rav Bruna was
saying that one is *not allowed* to make Kidush on bread. Consequently, if
he washes before Kidush, he reveals that he does not want to make Kidush on
wine. He thereby loses the option of making Kidush on wine because he showed
that he does not like wine. However, he also cannot make Kidush on bread,
because that is not an acceptable way of making Kidush. Therefore, he must
have someone else recite Kidush for him.
The Gemara then proves from Rav that one *is* allowed to make Kidush on
bread. If so, Rav Bruna has only been disproved in one of his two opinions.
Rav Bruna said that (1) one may not make Kidush on bread, and (2) one who
washed with intention to make Kidush on bread may not make Kidush on wine
(and therefore he cannot make Kidush at all). The Gemara only disproves his
first point, that making Kidush on bread is not an option. His other
opinion, that once a person shows that he does not like wine, he may not
make Kidush on wine, still remains true and was not disproved.
This explanation fits most appropriately with the words of the Gemara. Rav
Bruna said that "one who washes his hands may not make Kidush," which
implies that he may not make Kidush *at all* (unlike explanations (b), (c),
and (e)). Furthermore, the Gemara does not mention that Rav would make
Kidush on wine *even when he had washed*. Rather, the Gemara implies that he
would make Kidush on wine when he wanted to, without washing (again, unlike
explanations (b), (c), and (e)). If he washed, he would *not* be able to
make Kidush on wine. The Ran asserts that this is also the way the
(Hilchos Shabbos 29:9) learns the Gemara.