When Allah's Messenger (ﷺ) got his head shaved, Abu- Talha was the first to take some of his hair.
Sahih al-Bukhari Book 4, Hadith 37
← Previous Hadith I said to `Abida, "I have some of the hair of the Prophet (ﷺ) which I got from Anas or from his family." `Abida replied. "No doubt if I had a single hair of that it would have been dearer to me than the whole world and whatever is in it."

Sahih al-Bukhari Book 4, Hadith 36 Next Hadith → Allah's Messenger (ﷺ) said, "If a dog drinks from the utensil of anyone of you it is essential to wash it seven times."

Sahih al-Bukhari Book 4, Hadith 38