حَدَّثَنَا مُحَمَّدُ بْنُ الْحَارِثِ الْمِصْرِيُّ، حَدَّثَنَا يَحْيَى بْنُ رَاشِدٍ الْبَصْرِيُّ، عَنْ يَزِيدَ، مَوْلَى سَلَمَةَ عَنْ سَلَمَةَ بْنِ الأَكْوَعِ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ تَوَضَّأَ فَمَسَحَ رَأْسَهُ مَرَّةً ‏.‏

It was narrated that Salamah bin Akwa' said: "I saw the Messenger of Allah performing ablution, and he wiped his head once." Translation Not Available

Book Ref: Sunan Ibn Majah Book 1 Hadith 437
Web Ref:  Sunan Ibn Majah Vol 1 Book 1 Hadith 437

---