Sahih Bukhari | Volume 5 | Hadith Number 477

Narrated by Marwan and Al-Miswar bin Makhrama
The Prophet went out in the company of 1300 to 1500 of his companions in the year of Al-Hudaibiya, and when they reached Dhul-Hulaifa, he garlanded and marked his Hadi and assumed the state of Ihram.