Sahih Muslim | Book 7 | Chapter 35

Narrated by Ibn 'Umar
Ibn 'Umar reported that Allah's Messenger (may peace be upon him) used to come out (of Medina) by way of al-Shajarah and entered it by the way of al-Mu'arras and whenever he entered Mecca, he entered it from the upper side and went out of it from the lower side. This hadith has been narrated on the authority of 'Ubaidullah with the same chain of transmitters and in the narration transmitted by Zubair (it is mentioned) that the upper side is that which is at al-Batha

Narrated by 'Aisha (Allah be pleased with her)
'Aisha (Allah be pleased with her) reported that when Allah's Messenger may peace be upon him) came to Mecca he entered from its upper side and came out from its lower side.

Narrated by 'Aisha (Allah be pleased with her)
'Aisha (Allah be pleased with her) reported that Allah's Messenger (may peace be upon him) entered Mecca during the year of Victory from Kada i.e. from the upper side. Hisham said: My father entered It from both the Fides, but generally he entered from Kada.