I heard that Allah's Messenger (ﷺ) assumed Ihram with his hair matted together.
Sahih al-Bukhari Book 25, Hadith 27
← Previous Hadith (the wife of the Prophet (p.b.u.h) I used to scent Allah's Messenger (ﷺ) when he wanted to assume Ihram and also on finishing Ihram before the Tawaf round the Ka`ba (Tawaf-al-ifada).

Sahih al-Bukhari Book 25, Hadith 26 Next Hadith → I heard my father saying, "Never did Allah's Messenger (ﷺ) assume Ihram except at the Mosque, that is, at the Mosque of Dhul-Hulaifa.

Sahih al-Bukhari Book 25, Hadith 28