I was a man who emitted a lot of madhi. I asked the Prophet ﷺ [about that] and he said: ʿWudoo’ should be done for that and ghusl should be done for mani.ʿ
كُنْتُ رَجُلًا مَذَّاءً فَسَأَلْتُ النَّبِيَّ ﷺ فَقَالَ فِيهِ الْوُضُوءُ وَفِي الْمَنِيِّ الْغُسْلُ