Volume 5 · Book 59 · Hadith 470
Narrated Abu Qatada: We set out with the Prophet in the year of Al-Hudaibiya, and all his companions assumed the state of Ihram but I did not.
— Sahih Bukhari, Volume 5, Book 59: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi), Hadith #470