Wet dreams do not invalidate Sawm (Fast) or Hajj because it is beyond human control.
Allah says in Qur'an:
Allah does not charge a soul except [with that within] its capacity. [Surah Al-Baqarah 2:286]
However, you should perform Ghusl if sperm is ejaculated.
Source: Wet dreams- Fasting
It is a type of wet dream, you need to do ghusl after it but it is not a sin since you can not control yourself while asleep. Wet dreams are quite natural and it is a sign of puberty.
The Messenger of Allah (ﷺ) said: "The Pen is lifted from the minor, the insane person and the sleeper."
If you found the same discharge that comes after sexual intercross so you must do ghusl even if you dreamed or not.
The point is the coming of the sexual discharge out. Once you saw it -even without dream-so you must do ghusl
The liquid which comes from the woman after sexual intercross can be noticed by two main things:
1- it is a light ...
In The Name of Allah, The Most Beneficent, The Most Merciful.
Wet dreams during the day in Ramadan does not invalidate the fast because it is not intentional. The Qur'an says (interpretation of the meaning):
“Allaah burdens not a person beyond his scope” [Qur'an 2:286]
The Messenger of Allah said:
"Three things do not break the fast of the fasting ...
We may read in the sunnah:
Anas b. Malik reported:
Umm Sulaim who was the grandmother of Ishaq came to the Messenger of Allah (ﷺ) in the presence of 'A'isha and said to him: Messenger of Allah, in case or woman sees what a man sees in dream and she experiences in dream what a man experiences (i. e. experiences orgasm)? Upon this 'A'isha remarked: O Umm ...
Alqama and Aswad reported:
أَنَّ رَجُلاً، نَزَلَ بِعَائِشَةَ فَأَصْبَحَ يَغْسِلُ ثَوْبَهُ فَقَالَتْ عَائِشَةُ إِنَّمَا كَانَ يُجْزِئُكَ إِنْ رَأَيْتَهُ أَنْ تَغْسِلَ مَكَانَهُ فَإِنْ لَمْ تَرَ نَضَحْتَ حَوْلَهُ وَلَقَدْ رَأَيْتُنِي أَفْرُكُهُ مِنْ ثَوْبِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَرْكًا فَيُصَلِّي فِيهِ
A person stayed in the house of A'...
If you consider sperm as najis then washing it out is sufficient as you don't need to wash the whole piece of cloth this is the view of abu Hanifa and one opinion of imam Ahmad while imam Malik said one must wash it off, apparently without stating it is najis.
Note that washing something off (or using water) usually is done for cleaning najasa.
Else there's ...
Inshaallah your fast will still be valid. The hadath (impurities) including farts, urinating, janabah, etc. are not the requirement for doing starting the fast. Those are the requirement for other obligation such as the five prayer.