(10) باب الْقَدْرِ الْمُسْتَحَبِّ مِنَ الْمَاءِ فِي غُسْلِ الْجَنَابَةِ وَغُسْلِ الرَّجُلِ وَالْمَرْأَةِ فِي إِنَاءٍ وَاحِدٍ فِي حَالَةٍ وَاحِدَةٍ وَغُسْلِ أَحَدِهِمَا بِفَضْلِ الآخَرِ
Anas said:
The Apostle of Allah (ﷺ) performed ablution with one Mudd and took bath with a Sa' up to five Mudds.
Reference: Sahih Muslim 325 b
In-book reference: Book 3, Hadith 59
USC-MSA web (English) reference(deprecated numbering scheme): Book 3, Hadith 635