Sayyiduna Sahl bin Hunayf (may Allah be pleased with him) said: I used to have a great deal of madhy (pre-seminal fluid), because of which I would take a ritual bath very often. I asked the Prophet (peace and blessings be upon him) about it, and he (peace and blessings be upon him) said: "Ablution alone is sufficient for you." I said: O Messenger of Allah! What should I do about what gets on my clothes? He (peace and blessings be upon him) said: "Take a handful of water and sprinkle it on your clothes wherever you see it; that is sufficient."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4128