Muwatta Malik #765
Hajj
Yahya related to me from Malik from Musa ibn Uqba that Salim ibn
Abdullah heard his father say, "Your claim that the Messenger of
Allah, may Allah bless him and grant him peace, entered ihram from
this desert of yours is not true, because he only entered ihram from
the mosque, i.e. the mosque of Dhu'l-Hulayfa."
About Muwatta Malik
This hadith is #765 from Muwatta Malik, in the Book of Hajj. Muwatta Malik contains 1,985 hadiths across 61 books.