Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai:249Muḥammad b. ʿAbdullāh b. Yazīd > Sufyān > Hishām b. ʿUrwah from his father > ʿĀʾishah

It was narrated from 'Aishah that the Messenger of Allah ﷺ used to soak his head, then he would pour water over it three times.  

النسائي:٢٤٩أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ يَزِيدَ قَالَ حَدَّثَنَا سُفْيَانُ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ ؓ

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُشَرِّبُ رَأْسَهُ ثُمَّ يَحْثِي عَلَيْهِ ثَلاَثًا