My Little Pony: Friendship Is Magic, “The Point of No Return” S9E5 (2019)

In this episode, Twilight has to return an overdue library book and is sent to a basement to talk to the head of “extremely overdue books.” When she gets there, Spike, her companion, tells her that it seems like someone left a note on the door. Twilight remarks the note as being “Abandon hope all ye who enter” (the note actually says out for lunch). (at 7:30 min)