Sunan Abu Dawud
4204
Sahih+2

Narrated Jabir bin ‘Abdullah :Abu Quhafah was brought on the day of the conquest of Mecca with head and beard while like hyssop. The Messenger of Allah (ﷺ) said: Change this something, but avoid black

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid