Muwatta Malik

Yahya related to me from Malik from as-Salt ibn Zubayd from more than one of his family that Umar ibn al-Khattab discovered the smell of perfume while he was at ash-Shajara. Kathir ibn as-Salt was at his side, and Umar asked, ""Who is this smell of perfume coming from?"", and Kathir said, ""From me, amir al-muminin. I matted my hair with perfume and I intended not to shave it.'' Umar said, ""Go to a sharaba and rub your head until it is clean,"" and Kathir did so. Malik explained, ""A sharaba is the ditch at the base of a date-palm