another guest; and
still more contemptible is he who begins to eat before a disciple of the
wise; but contemptible before all these three put together is that guest
which troubles another guest.

_Derech Eretz Zuta_, chap. viii.

A roll of the law which has two mistakes to a column should be
corrected; but if there be three, it should be stowed away altogether.

_Menachoth_, fol. 29, col. 2.

The wolf, the lion, the bear, the leopard, the panther, the elephant,
and the sea-cat, each bear three years.

Ibid.

Rav Yehudah says, in the name of Rav, "The butcher is bound to have
three knives; one to slaughter with, one for cutting up the carcass, and
one to cut away the suet. Suet being as unlawful for food as pork."

_Chullin_, fol. 8, col. 2.

Three classes of ministering angels raise a song of praise every day.
One class says, Holy! the second responds, Holy! and the third
continues, Holy is the Lord of hosts! But in the presence of the Holy
One--blessed be He!--Israel is more beloved than the ministering angels;
for Israel reiterates the song every hour, while the ministering angels
repeat it only once a day, some say once a week, others once a month,
others once a year, others once in seven years, others once in a
jubilee, and others only once in eternity. Again, Israel mentions The
Name after two words, as it is said (Deut. vi. 4), "Hear Israel,
Yehovah," but the ministering angels do not mention The Name till after
three, as it is written (Isa. vi. 3), "Holy! holy! holy! Yehovah
Zebaoth." Moreover, the ministering angels do not take up the song above
till Israel has started it below; for it is said (Job xxxviii. 7), "When
the morning stars sang together, then all the sons of God shouted for
joy."

_Chullin_, fol. 91, col. 2.

The Rabbis have taught, a man should not sell to his neighbor shoes made
from the hide of a beast that has died of disease, as if of a beast that
had been slaughtered in the shambles, for two reasons: first, because he
imposes on him (for the skin of a beast that dies of itself is not so
durable as the hide of a slaughtered animal); second, because there is
danger (for the beast that died of itself might have been stung by a
serpent, and the poison remaining in the leather might prove fatal to
the wearer of shoes made of that leather). A man should not send his
neighbor a barrel of wine with oil floating upon its surface; for it
happened once that a man did so, and the recipient wen