When the Messenger of Allah ﷺ made peace with the people of Hudaibiya, 'Ali drew up the agreement between them, and so he wrote: Muhammad, the Messenger of Allah. (This is followed by the same wording as we have in the previous tradition except the omission of the words: This is what he has settled.)
سَمِعْتُ الْبَرَاءَ بْنَ عَازِبٍ يَقُولُ لَمَّا صَالَحَ رَسُولُ اللَّهِ ﷺ أَهْلَ الْحُدَيْبِيَةِ كَتَبَ عَلِيٌّ كِتَابًا بَيْنَهُمْ قَالَ فَكَتَبَ مُحَمَّدٌ رَسُولُ اللَّهِ ثُمَّ ذَكَرَ بِنَحْوِ حَدِيثِ مُعَاذٍ غَيْرَ أَنَّهُ لَمْ يَذْكُرْ فِي الْحَدِيثِ هَذَا مَا كَاتَبَ عَلَيْهِ