Narrated 'Amr bin Shu'aib:
from his father, from his grandfather that he Prophet (ﷺ) would take from his beard; from its breadth and its length. (JA)
English reference (JA): Vol. 5, Book 41, Hadith 2762 (JA)
Arabic reference (JA): Book 43, Hadith 2988 (JA)