It wasnarrated from Salim, from his father:
"I heard the MessengerofAllah (ﷺ) reciting the Talbiyah when he entered Ihram withsomething applied to his head to keep the hair together.'" (DE)
English reference (DE): Vol. 4, Book 25, Hadith 3047 (DE)
Arabic reference (DE): Book 25, Hadith 3163 (DE)