Answered by: Molana Eunus Ali
I was in sleep and then I woke up. Even after waking up, I was on my bed and my eyes were closed. Suddenly I started dreaming purposely that I am having intercourse with a woman, whom I know very well. While dreaming purposely I have discharged. Does my Ramadan fast is validate?
Semen discharged whilst sleeping (wet dream) or due to thinking or imagination (fantasising) will not invalidate the fast.
The person will continue the fast as normal and it will not have to be repeated.
As for semen discharged as a result of contact such as kissing and touching (not including intentional sexual intercourse), the fast will be invalid and will need to be repeated (qadha).
In regards to your question as the discharge took place whilst asleep the fast will remain intact.
Please refer to the following link:
Only Allah knows best
Written by Molana Eunus Ali
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 Al Lubab Fi SharhilKitaab, Page 173, Al MaktabatulUmariyyah