At Night: Berachot 12b, 14b
Remembering the departure in the times of the Messiah: Berachot 12b, 13a
Specifically in Recitation of Shema: Berachot 12b
Before the Time of Recitation of Shema: Berachot 13b
In Kiddush? Introducing Shabbat: Pesachim 117b
