Hajj

Malik :: Book 20 : Hadith 20.5.19

Yahya related to me from Malik from Nafi from Aslam, the mawla of Umar ibn al Khattab, that Umar ibn al-Khattab discovered the smell of perfume while he was at ash-Shajara, and he asked, "Who is this smell of perfume coming from?" Muawiya ibn Abi Sufyan answered, "From me, amir al-muminin." Umar said, "From you? By the life of Allah!" Muawiya explained, "Umm Habiba perfumed me, amir al-muminin. "'Umar then said, "You must go back and wash it off."

Source materials are from the University of Southern California MSA site
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