Peace be upon you. If a woman reaches the peak of pleasure and fluid is discharged at that moment, she is considered in a state of ritual impurity (janabah) and must perform a wash. However, if she doubts whether she reached that state or whether the fluid was discharged, then there is no obligation on her. According to Ayatollah Khamenei, if the fluid is discharged at the peak of sexual arousal, it is considered impure and necessitates a wash. Additionally, according to Ayatollah Sistani, what is discharged at the peak of sexual arousal is impure and requires a wash, and it is also obligatory to wash if a significant amount is discharged before that. However, minor wetness that occurs with slight arousal and does not exceed the private area is pure and does not require a wash, regardless of whether it occurs while awake or asleep. May you be successful in all good.