حَدَّثَنَا عَبْد اللَّهِ حَدَّثَنِي وَهْبُ بْنُ بَقِيَّةَ الْوَاسِطِيُّ أَنْبَأَنَا خَالِدٌ عَنْ يَزِيدَ بْنِ أَبِي زِيَادٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى عَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ كُنْتُ رَجُلًا مَذَّاءً فَسَأَلْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ فِيهِ الْوُضُوءُ وَفِي الْمَنِيِّ الْغُسْلُ
مسند امام احمد بن حنبل · Hadith 891
It was narrated that 'Ali (RA) said: I was a man who emitted a lot of madhi. I asked the Prophet (PBUH) [about that] and he said: "Wwrfoo' should be done for that and ghusl should be done for mam."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020