صحيح ابن خزيمه
Sahih Ibn Khuzaymah
جماع أبواب الأحداث الموجبة للوضوءChapters on Acts Requiring Wudu
بَابُ ذِكْرِ وُجُوبِ الْوُضُوءِ مِنَ الْمَذْيِ،Chapter mentioning the obligation of ablution after pre-seminal fluid (madhy)
Hadith Q18
وَهُوَ مِنَ الْجِنْسِ الَّذِي قَدْ أَعْلَمْتُ أَنَّ اللَّهَ قَدْ يُوجِبُ الْحُكْمَ فِي كِتَابِهِ بِشَرْطٍ، وَيُوجِبُهُ عَلَى لِسَانِ نَبِيِّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ بِغَيْرِ ذَلِكَ الشَّرْطِ، إِذِ اللَّهُ عَزَّ وَجَلَّ لَمْ يَذْكُرْ فِي آيَةِ الْوُضُوءِ الْمَذْيَ، وَالنَّبِيُّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَدْ أَوْجَبَ الْوُضُوءَ مِنَ الْمَذْيِ، وَاتَّفَقَ عُلَمَاءُ الْأَمْصَارِ قَدِيمًا وَحَدِيثًا عَلَى إِيجَابِ الْوُضُوءِ مِنَ الْمَذْيِ
This ruling is of the same type as I have mentioned before: sometimes Allah the Exalted makes a command in His Book conditional and obligatory, then makes the same command unconditionally obligatory through the tongue of the Prophet (peace be upon him). For Allah the Exalted did not mention madhiy (pre-seminal fluid) in the verse of wudu, whereas the Noble Prophet (peace be upon him) made wudu obligatory due to madhiy. All the early and later scholars of all cities are unanimous that wudu becomes obligatory due to madhiy.
