Talmud for Bava Batra 241:8
רבה בר בר חנה אמר רבי יוחנן יום שהותר שבט בנימן לבא בקהל דכתיב (שופטים כא, א) ואיש ישראל נשבע במצפה לאמר איש ממנו לא יתן בתו לבנימן לאשה מאי דרוש ממנו ולא מבנינו
were given, but what is [the importance of] the fifteenth of Ab? — Rab Judah said in the name of Samuel: [It was] the day on which the tribes were allowed to intermarry with one another.<span class="x" onmousemove="('comment',' The prohibition on an heiress to marry into another tribe, in accordance with Num. XXXVI, 8, which requires an heiress to be 'wife unto one of the family of the tribe of her father', was removed. The prohibition was held to apply only to the generation of those who entered the land, and to lapse when the last of these had died. ');"><sup>19</sup></span> What was their exposition?<span class="x" onmousemove="('comment',' From what Scriptural text, and how, was it deduced that the prohibition was to lapse with the death of the first generation of those who entered the land? ');"><sup>20</sup></span> — This is the thing<span class="x" onmousemove="('comment',' Num. XXXVI, 6. ');"><sup>21</sup></span>
Jerusalem Talmud Taanit
In the explanations, the terms “included” and “excluded” have to be switched. The text follows the usual pattern, that if possibilities A and B are raised, B is explained before A. Since the number 12 of tribe cannot be changed, either Joseph is counted as one tribe and Benjamin is included (35:11), or Ephraim and Manasse are counted as full tribes, there seems to be no place for Benjamin. This logic is not followed by the Babli., and Benjamin was not yet born. 402Thr. rabba, Introduction (33). Rebbi Abun said, digging stopped on it, as Rebbi Levi said, on every eve of the Ninth of Av, Moses had a declaration published in all the encampment and said, go out for digging, go out for digging. They went out, dug graves for themselves, and slept. In the morning they were getting up and found themselves missing 15’000 and detail403If always the same number died on the Ninth of Av and nobody during the year, the number would be 600’000:38 = 15’789.47.. In the last year they did that, got up, and found themselves whole. They said, maybe we erred in the computation. The same on the Tenth, the Eleventh, the Twelfth, the Thirteenth, and the Fifteenth. Since the moon was full they said, it seems that The Holy One, praise to Him, vacated this hard judgment against us. They got up and made a holiday.