Does a wet dream obligate a person to perform ghusl? What if he wakes up dry after having a wet dream and only sees something come out after he goes to relieve himself in the bathroom?
Sheikh Sa`d al-Shuwayrikh
If a person has a sexual emmission after a wet dream, he has to perform ghusl.
If a person has what seems to be a wet dream, but upon waking he does not see any trace of it on his clothes or his body, then he does not have to perform ghusl.
`A’ishah said: “Someone asked the Prophet (peace be upon him) about a man seeing himself discharging in his dream though he does not feel wet.”
The Prophet (peace be upon him) said: “He does not have to bathe.”
Umm Salamah asked: “What about women, O Messenger of Allah?”
He said: “Women are the full sisters of men.” [Sunan Abî Dâwûd and Sunan al-Tirmidhî].
In another hadîth, the Prophet (peace be upon him) confirmed that a woman had to perform ghusl: “… if she sees the liquid.” [Sahîh al-Bukhârî and Sahîh Muslim]
In this hadîth, the Prophet (peace be upon him) made it clear that ghusl is only obligatory upon seeing the liquid. Therefore, if a person has what seems to be a wet dream, but upon waking finds nothing, then he does not have to bathe.
Whatever comes out after urination does not take a special ruling. It is at worst merely some impurity. It does not obligate a person to perform ghusl, since the liquid which obligates a person to do so is the one which discharges on sexual climax. It is related in the Sunan: “…if it discharges by forceful ejaculation”.
Source: Islam Today
-- Al Arabiya Digital