Sunan Ibn Majah 3630
سنن ابن ماجه#3630SahihIt was narrated that Ibn ‘Umar said:“The white hair of the Prophet (ﷺ) numbered approximately twenty.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Zubair Ali ZaiSahih
In-book reference: 32:81