(9) باب هَلْ يُدْخِلُ الْجُنُبُ يَدَهُ فِي الإِنَاءِ قَبْلَ أَنْ يَغْسِلَهَا إِذَا لَمْ يَكُنْ عَلَى يَدِهِ قَذَرٌ غَيْرُ الْجَنَابَةِ
Narrated Aisha:
The Prophet (ﷺ) and I used to take a bath from a single pot of water and our hands used to go in the pot after each other in turn.
Reference: Sahih al-Bukhari 261
In-book reference: Book 5, Hadith 14
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 5, Hadith 261