This open plain of yours where you tell lies about the Messenger of Allah ﷺ, the Messenger of Allah ﷺ only entered into ihram from beside the mosque, meaning the mosque of Dhul-Hulayfah.
حدثنا القعنبي عن مالك عن موسى بن عقبة
بيداؤكم هذه التي تكذبون على رسول الله ﷺ فيها ما أهل رسول الله ﷺ إلا من عند المسجد يعني مسجد ذي الحليفة
Bukhari narrated it in the book of Hajj, chapter on raising the voice in ihram at the masjid of Zulhulayfa, hadith no. 1541, and Muslim narrated it in the book of Hajj, chapter on commanding the people of Madinah to enter ihram from the masjid of Zulhulayfa, hadith no. 1186, from the hadith of Malik through this same chain. It is also found in the Muwatta (Yahya's version), 1/333.