The Messenger of Allah ﷺ said five takbirs.
حدثنا إبراهيم بن المنذر الحزامي حدثنا إبراهيم بن علي الرافعي
أن رسول الله ﷺ كبر خمسا
No references are available.
[Sahih] Ibrahim bin Ali is daif (Taqrib), and the status of Kathir was mentioned earlier, h: 165, and the preceding hadith supports it.