Muslim

195. Commentary: Both men and women can experience dreams. In a dream, one may also see the act of intercourse, but ritual bath (ghusl) becomes obligatory only when semen (mani) is discharged, whether it is a man or a woman. If semen is not discharged, then even if complete intercourse occurred in the dream, ritual bath is not obligatory. And if, without a dream and without desire, semen is discharged during sleep, then ritual bath becomes obligatory, whether it is a man or a woman. Thus, in a wet dream (ihtilam), the cause for ritual bath is solely the discharge of semen, whether it is from a man or a woman.

Hadith Commentary:
Vocabulary of the Hadith:
(1)
FADHIHTI AN-NISA’:
(You have said something which is considered shameful to express)
you have disgraced the women,
because this implies
that within them,
there is a strong desire to go to men.

(2)
TARIBAT YAMINUKI:
According to Arabic idiom, this phrase is used when someone’s statement is not liked,
or when one wishes to express anger or displeasure at it, or to reject it and rebuke or reprimand it, or to express astonishment and wonder;
the literal meaning or a supplication (of harm) is not intended,
therefore the Prophet (sallallahu alayhi wa sallam) used these very words for Aisha (radi Allahu anha),
meaning: your statement is to be rejected,
she had asked about a religious issue
which indeed should have been asked.

Benefits and Rulings:
Just as in the case of a man experiencing a wet dream (ihtilam), a ritual bath (ghusl) becomes obligatory, if a woman ever experiences a wet dream, she too must perform a ritual bath (ghusl); merely washing the private area and performing ablution (wudu) will not suffice.