(10) باب الْقَدْرِ الْمُسْتَحَبِّ مِنَ الْمَاءِ فِي غُسْلِ الْجَنَابَةِ وَغُسْلِ الرَّجُلِ وَالْمَرْأَةِ فِي إِنَاءٍ وَاحِدٍ فِي حَالَةٍ وَاحِدَةٍ وَغُسْلِ أَحَدِهِمَا بِفَضْلِ الآخَرِ
Safina reported:
The Messenger of Allah (ﷺ) took a bath with one Sa` of water because of sexual intercourse and performed ablution with one Mudd.
Reference: Sahih Muslim 326 a
In-book reference: Book 3, Hadith 60
USC-MSA web (English) reference(deprecated numbering scheme): Book 3, Hadith 636