Sayyiduna Ali (may Allah be pleased with him) said: Discharge of madhiy (pre-seminal fluid) would occur frequently from my body. Even in cold weather, I would perform ghusl (ritual bath) so much because of it that my back became sore. I mentioned this to the Prophet (peace and blessings be upon him), so he said: "Do not do that. When you see madhiy, wash your private part and perform wudu (ablution) as you do for prayer, and if semen is discharged, then perform ghusl."
Hadith Referenceمسند احمد / مسند الخلفاء الراشدين / 868