Muwatta Malik, Book 2, Hadith 100 (In-Book)

Yahya related to me from Malik from Ibn Shihab from Urwa ibn az- Zubayr from A'isha, umm al-muminin, that the Messenger of Allah, may Allah bless him and grant him peace, used to do ghusl for major ritual impurity from a vessel which contained a faraq.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ، عَنْ عَائِشَةَ أُمِّ الْمُؤْمِنِينَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَغْتَسِلُ مِنْ إِنَاءٍ - هُوَ الْفَرَقُ - مِنَ الْجَنَابَةِ ‏.‏

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also referenced under: Book 2, Hadith 70 (USC-MSA)