What was narrated concerning wiping the head
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 (ﷺ) performing ablution, and he wiped his head once."