مُوَطَّأُ مَالِكٍ
Muwatta Malik 70
Purity
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، أَنَّ أَبَاهُ، عُرْوَةَ بْنَ الزُّبَيْرِ كَانَ يَنْزِعُ الْعِمَامَةَ وَيَمْسَحُ رَأْسَهُ بِالْمَاءِ .
Yahya related to me from Malik from Hisham ibn Urwa that Abu Urwa ibn az-Zubayr used to take off his turban and wipe his head with water.
Arabic/English book reference: Book 2, Hadith 40