Authentic
graded by Al-Albani
Mishkat al-Masabih 2647
Narrator:Ibn ‘Abbās
وَعَنِ ابْنِ عَبَّاسٍ قَالَ: قَالَ لِي مُعَاوِيَةُ: إِنِّي قَصَّرْتُ مِنْ رَأْسِ النَّبِيِّ صلى الله عَلَيْهِ وَسلم عِنْد الْمَرْوَة بمشقص
Ibn ‘Abbas said that Mu'awiya told him he had clipped some hair from the Prophet’s head at al-Marwa with a broad, iron arrowhead. Bukhari and Muslim.
Cited in Mishkat al-Masabih (No. 2647).