Mishnà su Levitico 23:78

Five species [of grains] are subject to [the law of] hallah: wheat, barley, spelt, oats and rye. These are subject to hallah, and [dough made from different types of these grains] are accounted together one with another [as one quantity]. And their “new” [harvest] is prohibited prior to Pesah, and [they are subject] to [the prohibition of] reaping prior to the Omer. If they took root prior to the Omer, the omer permits them. If not, they are prohibited until the next Omer has come.

Also he used to say that there are five things that last twelve months:The judgment of the generation of the flood [continued] twelve months; The judgment of Job [continued] twelve months; The judgment of the Egyptians [continued] twelve months; The judgment of Gog and Magog in the time to come [will continue] twelve months; The judgment of the wicked in gehinom [continues] twelve months, for it is said, and “It will be from one month until its [same] month” (Isaiah 66:23). Rabbi Yohanan ben Nuri says: “[As long as] from Passover to Shavuoth, for it is said, “And from one Sabbath until its [next] Sabbath” (ibid.).

Also he used to say that there are five things that last twelve months:The judgment of the generation of the flood [continued] twelve months; The judgment of Job [continued] twelve months; The judgment of the Egyptians [continued] twelve months; The judgment of Gog and Magog in the time to come [will continue] twelve months; The judgment of the wicked in gehinom [continues] twelve months, for it is said, and “It will be from one month until its [same] month” (Isaiah 66:23). Rabbi Yohanan ben Nuri says: “[As long as] from Passover to Shavuoth, for it is said, “And from one Sabbath until its [next] Sabbath” (ibid.).

One enters a city and doesn’t know anyone. He says: “Who here is trustworthy? Who gives tithes here?” One person one responds: “I am.” He may not be trusted. [But if] he replied: “So-and-so is trustworthy,” he may be trusted. He went to buy from so-and-so, and he asked him: “Who here sells aged produce?” and so-and-so replied: “He sent you to me,” though they appear to be repaying each other, they may be trusted.

Ten wonders were wrought for our ancestors in the Temple: [1] no woman miscarried from the odor of the sacred flesh; [2] the sacred flesh never became putrid; [3] no fly was ever seen in the slaughterhouse; [4] no emission occurred to the high priest on the Day of Atonement; [5] the rains did not extinguish the fire of the woodpile; [6] the wind did not prevail against the column of smoke; [7] no defect was found in the omer, or in the two loaves, or in the showbread; [8] the people stood pressed together, yet bowed down and had room enough; [9] never did a serpent or a scorpion harm anyone in Jerusalem; [10] and no man said to his fellow: the place is too congested for me to lodge overnight in Jerusalem.