Where does “طلاق” come from?

طلاق (Classical Persian) comes from Arabic طَلَاق, from Arabic ل, from Proto-Semitic *lV-.

Ancestry of “طلاق”, step by step

Step	Language	Word	Meaning
1	Arabic	طَلَاق	divorce
2	Arabic	ل	to, for, belonging to; لَـ •; Used to express...
3	Proto-Semitic	*lV-	—