Pilgrimmage (Hajj) 
Bukhari :: Book 2 :: Volume 26 :: Hadith 614
Narrated Salim bin 'Abdullah :
I heard my father saying, "Never did Allah's Apostle assume Ihram except at the Mosque, that is, at the Mosque of Dhul-Hulaifa.
Pilgrimmage (Hajj)
Bukhari :: Book 2 :: Volume 26 :: Hadith 614
Narrated Salim bin 'Abdullah :
I heard my father saying, "Never did Allah's Apostle assume Ihram except at the Mosque, that is, at the Mosque of Dhul-Hulaifa.