Sahih Muslim , Book 3, Hadith 593 (USC-MSA) ⓘ

'Ali reported: I was one whose prostatic fluid flowed readily and I was ashamed to ask the Apostle about it, because of the position of his daughter. I, therefore, asked Miqdad. b. al-Asad and he inquired of him (the Holy Prophet). He (the Holy Prophet) said: He should wash his male organ and perform ablution.

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، وَأَبُو مُعَاوِيَةَ وَهُشَيْمٌ عَنِ الأَعْمَشِ، عَنْ مُنْذِرِ بْنِ يَعْلَى، - وَيُكْنَى أَبَا يَعْلَى - عَنِ ابْنِ الْحَنَفِيَّةِ، عَنْ عَلِيٍّ، قَالَ كُنْتُ رَجُلاً مَذَّاءً وَكُنْتُ أَسْتَحْيِي أَنْ أَسْأَلَ النَّبِيَّ صلى الله عليه وسلم لِمَكَانِ ابْنَتِهِ فَأَمَرْتُ الْمِقْدَادَ بْنَ الأَسْوَدِ فَسَأَلَهُ فَقَالَ ‏ "‏ يَغْسِلُ ذَكَرَهُ وَيَتَوَضَّأُ ‏" ‏ ‏.‏