وإن احتلم فلا يجامع حتى يغسل فرجه أو يبول
إحياء علوم الدين للغزالي
If a man has a wet dream, he must not have sex until he washes his crotch or urinates.
Revival of the Religious Sciences [Ihyaa Ulum Al-deen] by Al-Ghazali
