I used to suffer greatly from prostatic discharge, so I would bathe frequently because of it. I asked the Messenger of Allah ﷺ about it, and he said, "Performing ablution is sufficient for you in such a case."I asked, "Messenger of Allah, what about the discharge that gets on my garment?"He replied, "It is enough for you to take a handful of water and sprinkle it on the spot of your garment where you see that it has reached."
حدثنا أبو كريب حدثنا عبد الله بن المبارك وعبدة بن سليمان عن محمد بن إسحق حدثنا سعيد بن عبيد بن السباق عن أبيه
كنت ألقى من المذي شدة فأكثر منه الاغتسال فسألت رسول الله ﷺ فقال إنما يجزيك من ذلك الوضوء قلت يا رسول الله كيف بما يصيب ثوبي قال إنما يكفيك كف من ماء تنضح به من ثوبك حيث ترى أنه أصاب
[Its chain of transmission is hasan] Abu Dawud narrated it in the Book of Purification, chapter on madhi, hadith no. 210, from the hadith of Ibn Ishaq, with this wording. Tirmidhi graded it sahih, hadith no. 115, as did Ibn Khuzayma and Ibn Hibban.