He was a man who emitted a great deal of madhi (prostatic fluid), but he felt too shy to ask the Prophet ﷺ about madhi. He said to al-Miqdad: Ask the Messenger of Allah ﷺ for me about madhi. So he asked him, and the Messenger of Allah ﷺ said: ʿLet him do wudoo’ for that.ʿ
أَنْ يَسْأَلَ النَّبِيَّ ﷺ عَنِ الْمَذْيِ قَالَ فَقَالَ لِلْمِقْدَادِ سَلْ لِي رَسُولَ اللهِ ﷺ عَنِ الْمَذْيِ قَالَ فَسَأَلَهُ قَالَ فَقَالَ رَسُولُ اللهِ ﷺ فِيهِ الْوُضُوءُ