Praise be to Allaah.
Divorce (talaaq) as prescribed in Islam is that in which a
man divorces his wife during a period of purity in which he has not had
intercourse with her. If he divorces her when she is menstruating or
bleeding following childbirth (nifaas), or during a period of purity in
which he has had intercourse with her, then this is an innovated divorce
The fuqaha’ differed as to whether it counts as such. The
majority are of the view that it does count as such, but some are of the
view that it does not, because it is a haraam, innovated divorce, and Allah,
may He be exalted, says (interpretation of the meaning): “O Prophet
(SAW)! When you divorce women, divorce them at their Iddah (prescribed
periods)” [at-Talaaq 65:1]. What is meant is: when they are pure (not
menstruating) and their husbands have not had intercourse with them. Among
those who were of this opinion was Shaykh al-Islam Ibn Taymiyah (may Allah
have mercy on him), who was followed by a number of scholars.
It says in Fataawa al-Lajnah ad-Daa’imah (20/58):
There are several types of innovated divorce (talaaq bid‘i), such as when a
man divorces his wife when she is menstruating or bleeding following
childbirth (nifaas), or during a period of purity in which he has had
intercourse with her. The correct view is that this does not count as such.
Based on that, if you divorce your wife during a period of
purity in which you have had intercourse with her, then it does not count as
such according to the more correct view.
With regard to divorce issued in a state of anger, that is
subject to further discussion. It has been discussed previously in the
answer to question no. 45174
And Allah knows best.