(4) باب الإحرام وما يتعلق به
Ibn 'Umar (RAA) narrated, 'The Messenger of Allah (ﷺ) used to start saying the Talbiyah. (after entering the state of Ihram) from the mosque of Dhul Hulaifa (i.e. from the Miqat of Madinah). Agreed upon.
Reference: Bulugh al-Maram 728
In-book reference: Book 6, Hadith 21
English translation: Book 6, Hadith 747