Q: I fell asleep on my sofa and had a wet dream, then I got up and felt my trousers but it was all dry. Do I have to clean the sofa?
A: If after waking up you did not see any trace of semen on your clothing or anywhere else, ghusal will not be compulsory upon you and nor do you have to clean your clothing or the sofa.
And Allah Ta’ala (الله تعالى) knows best.
Checked & Approved: