Sunan Abi Dawud, Book 1, Hadith 130 (USC-MSA) ⓘ
Al-Rubayyi’ reported: The Prophet wiped his head with water which was left over in his hand.
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ دَاوُدَ، عَنْ سُفْيَانَ بْنِ سَعِيدٍ، عَنِ ابْنِ عَقِيلٍ، عَنِ الرُّبَيِّعِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم مَسَحَ بِرَأْسِهِ مِنْ فَضْلِ مَاءٍ كَانَ فِي يَدِهِ .
also referenced under: Hadith 130 (DarusSalam) & Hadith 130 (Hasan)