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.
ahmad:25107Yazīd > Shuʿbah b. al-Ḥajjāj > Abū Bakr b. Ḥafṣ > Abū Salamah > ʿĀʾishah > Saʾalahā Akhūhā from al-Raḍāʿah

[Machine] About the (ritual) washing of the Messenger of Allah ﷺ from impurity (junub), she sent for a quantity of water equivalent to a sa', then she performed ablution and poured it over her head three times.  

أحمد:٢٥١٠٧حَدَّثَنَا يَزِيدُ قَالَ أَخْبَرَنَا شُعْبَةُ بْنُ الْحَجَّاجِ عَنْ أَبِي بَكْرِ بْنِ حَفْصٍ عَنْ أَبِي سَلَمَةَ عَنْ عَائِشَةَ قَالَ سَأَلَهَا أَخُوهَا مِنَ الرَّضَاعَةِ

عَنْ غُسْلِ رَسُولِ اللهِ ﷺ مِنَ الْجَنَابَةِ؟ فَدَعَتْ بِمَاءٍ قَدْرَ الصَّاعِ فَاغْتَسَلَتْ وَصَبَّتْ عَلَى رَأْسِهَا ثَلَاثًا