Yahya related to me from Malik from Abu'n Nadr, the mawla of Abdullah ibn Ubaydullah, from Sulayman ibn Yasar from alMiqdad ibn al- Aswad that Ali ibn Abi Talib told him to ask the Messenger of Allah ﷺ what a man should do, who, when close to his wife, had a flow of prostatic fluid. Ali explained that the daughter of the Messenger of Allah ﷺ was living with him then and he was too shy to ask for himself. Al-Miqdad said, "I asked the Messenger of Allah ﷺ about it, and he said, 'When you find that, wash your genitals with water and do wudu as for prayer.' "  

أَنْ يَسْأَلَ لَهُ رَسُولَ اللَّهِ ﷺ عَنِ الرَّجُلِ إِذَا دَنَا مِنْ أَهْلِهِ فَخَرَجَ مِنْهُ الْمَذْىُ مَاذَا عَلَيْهِ قَالَ عَلِيٌّ فَإِنَّ عِنْدِي ابْنَةَ رَسُولِ اللَّهِ ﷺ وَأَنَا أَسْتَحِي أَنْ أَسْأَلَهُ قَالَ الْمِقْدَادُ فَسَأَلْتُ رَسُولَ اللَّهِ ﷺ عَنْ ذَلِكَ فَقَالَ إِذَا وَجَدَ ذَلِكَ أَحَدُكُمْ فَلْيَنْضَحْ فَرْجَهُ بِالْمَاءِ وَلْيَتَوَضَّأْ وُضُوءَهُ لِلصَّلاَةِ  

Yahya related to me from Zayd ibn Aslam from his father that Umar ibn al-Khattab said, "I find it dropping from me like small beads. When you find that, wash your penis and do wudu as for prayer."  

قَالَ إِنِّي لأَجِدُهُ يَنْحَدِرُ مِنِّي مِثْلَ الْخُرَيْزَةِ فَإِذَا وَجَدَ ذَلِكَ أَحَدُكُمْ فَلْيَغْسِلْ ذَكَرَهُ وَلْيَتَوَضَّأْ وُضُوءَهُ لِلصَّلاَةِ يَعْنِي الْمَذْىَ  

Yahya related to me from Malik from Zayd ibn Aslam from his father that Jundub, the mawla of Abdullah ibn Ayyash, said, "I asked Abdullah ibn Umar about prostatic fluid and he said, 'When you find it, wash your genitals and do wudu as for prayer.' "  

فَقَالَ إِذَا وَجَدْتَهُ فَاغْسِلْ فَرْجَكَ وَتَوَضَّأْ وُضُوءَكَ لِلصَّلاَةِ