It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both), he says that Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) said: "I was a person who had a lot of madhiy (pre-seminal fluid)." The Messenger of Allah (peace and blessings be upon him) was asked about this on my behalf, so he (peace and blessings be upon him) said: "Performing wudu (ablution) is sufficient for you due to madhiy (coming out)." Imam Abu Bakr (may Allah have mercy on him) says that the complete wording of the narration of Sayyiduna Sahl bin Hunaif regarding madhiy from the Prophet (peace and blessings be upon him) is as follows «‏‏‏‏يكفيك من ذالك الوضوء» ‏‏‏‏: "Performing wudu due to madhiy coming out will be sufficient for you." I have mentioned this under the chapter of washing clothes when madhiy touches them.