Bulugh al-Maram, Book 1, Hadith 52 (English)

Narrated Al-Mughira bin Shu’ba (rad): The Prophet performed ablution and passed wet hands on his forelock, over the turban and over the two leather socks. [ Reported by Muslim].

وَعَنْ اَلْمُغِيرَةِ بْنِ شُعْبَةٍ ‏- رضى الله عنه ‏- { أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-تَوَضَّأَ, فَمَسَحَ بِنَاصِيَتِهِ, وَعَلَى اَلْعِمَامَةِ وَالْخُفَّيْنِ.‏ } أَخْرَجَهُ مُسْلِم ٌ (59)‏.‏ ‏1 ‏- صحيح.‏ رواه مسلم (274)‏ (83)‏.‏

sunnah.com

also referenced under: Book 1, Hadith 54 (In-Book)