Reference for Megillah 23:3

מ"מ קשו קראי אהדדי כתיב (ירמיהו כט, י) מלאות לבבל וכתיב (דניאל ט, ב) לחרבות ירושלם

In any case there is a contradiction between the texts. It is written [in one], "When there are accomplished for Babylon", (Jeremiah 29:10) and it is written [in the other], "For the desolation of Jerusalem?" (Daniel 9:2).

Jastrow