Volume 2 · Book 26 · Hadith 646
Narrated Ibn 'Umar: Allah's Apostle entered Mecca from Kada' from the highest Thaniya which is at Al-Batha' and used to leave Mecca from the low Thaniya.
— Sahih Bukhari, Volume 2, Book 26: Pilgrimmage (Hajj), Hadith #646