The rallying cry of the Prophet ﷺ during the Battle of Hunayn

I heard the Prophet ﷺ saying on the day of Hunayn, "I am the Prophet, this is no falsehood. I am the son of Abd al-Muttalib."

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ يَوْمَ حُنَيْنٍ: «أَنَا النَّبِيُّ لَا كَذِبْ أَنَا ابْنُ عَبْدِ الْمُطَّلِبْ۔»