Talaq and Khula Explained
Talaq is a husband-initiated divorce, and khula is a process by which a wife can seek to end a marriage. Both are recognised, permitted parts of Islamic marriage. The specific procedures, conditions, and how many stages are involved are actively contested between schools of thought, and this page deliberately stays at the level of general background rather than pretending there is one settled procedure.
Talaq, in general terms
Talaq is a pronouncement of divorce made by the husband. Beyond that basic definition, the specifics, including how many pronouncements are involved, whether and when it becomes final, and what happens if multiple pronouncements are made at once, are areas of real, long-standing difference between schools of thought, and in several countries, of ongoing legal reform. This isn't a gap in this article. It reflects genuine, active disagreement among scholars and lawmakers, which is exactly why it needs a qualified local scholar rather than general guidance.
Khula, in general terms
Khula is a process by which a wife can seek to end a marriage, generally involving her request and some form of agreement or ruling, depending on the circumstances and the school of thought followed. The details, including anything related to mahr, again vary. Confirm them with a local imam or Islamic court rather than assuming.
Why this page stops here
Getting the specific mechanics wrong on a topic this consequential would do real harm, and the honest answer is that the mechanics actually differ depending on school of thought and local legal context. A local imam, and where relevant a family law solicitor, can give you the actual answer for your situation. What follows in this section, iddah, remarriage, and supporting children, covers ground that's more settled.