I was a man who emitted a lot of madhi. I asked the Messenger of Allah ﷺ about that and he said: “For madhi, wudooʿ should be done and for mani, ghusl should be done.ʿ
كُنْتُ رَجُلًا مَذَّاءً فَسَأَلْتُ رَسُولَ اللهِ ﷺ عَنْ ذَلِكَفَقَالَ فِي الْمَذْيِ الْوُضُوءُ وَفِي الْمَنِيِّ الْغُسْلُ