The answer is "Laadki" (the word for girl).
Let's break it down:
* "Ladki" is present before the wedding ("pehle").
* "Ladki" is also present after the wedding ("baad").
* However, "Ladki" is not present during the day ("din"). This is because after the wedding, she becomes a "bahu" (daughter-in-law).
This is a playful way to use the word "Ladki" in the context of a marriage. 😊