Reference for Rosh Hashanah 36:12
מתיב רב כהנא מעשה וגזרו תענית בחנוכה בלוד וירד ר"א ורחץ ורבי יהושע וסיפר ואמרו להם צאו והתענו על מה שהתעניתם
Rab and R'Hanina hold that the Megillath Ta'anith has been annulled, interpreting the words of the prophet thus: 'When there is peace, these days<span class="x" onmousemove="('comment',' The four days mentioned by Zechariah.');"><sup>16</sup></span> shall be for joy and gladness, but when there is no peace, they shall be fasts', and placing the days mentioned in the Megillath Ta'anith, on the same footing. R'Johanan and Resh Lakish hold that the Megillath Ta'anith has not been annulled, maintaining that it was those others [mentioned by the prophet] that the All-Merciful made dependent on the existence of the Temple,<span class="x" onmousemove="('comment',' So that when the Temple is restored and there is peace these fasts are abolished.');"><sup>17</sup></span>