Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:3012ʿAlī b. Ḥujr > Sharīk > Abū Isḥāq > al-Aswad > ʿĀʾishah

[Machine] The Prophet ﷺ used to go out for the Fajr prayer, and his head would be dripping from the ritual bath of sexual impurity (janaba), then he would fast that day. Abu Abdullah said, and Abu Yunus narrated this from Aisha without mentioning this wording.  

الكبرى للنسائي:٣٠١٢أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ قَالَ أَخْبَرَنَا شَرِيكٌ عَنْ أَبِي إِسْحَاقَ عَنِ الْأَسْوَدِ عَنْ عَائِشَةَ قَالَتْ

كَانَ النَّبِيُّ ﷺ «يَخْرُجُ لِصَلَاةِ الْفَجْرِ وَرَأْسُهُ يَقْطُرُ مِنْ غُسْلِ الْجَنَابَةِ ثُمَّ يَصُومُ ذَلِكَ الْيَوْمَ» قَالَ أَبُو عَبْدِ الرَّحْمَنِ وَقَدْ رَوَاهُ أَبُو يُونُسَ عَنْ عَائِشَةَ بِغَيْرِ هَذَا اللَّفْظِ