Some of the children of al-Ala' ibn al-Hadrami said: Al-Ala' ibn al-Hadrami was the governor of the Prophet ﷺ at al-Bahrayn, and when he wrote to him he began with his won name. (Using translation from Abū Dāʾūd 5134)
أَنَّ الْعَلَاءَ بْنَ الْحَضْرَمِيِّ ؓ كَانَ عَامِلَ النَّبِيِّ ﷺ عَلَى الْبَحْرَيْنِ كَانَ إِذَا كَتَبَ إِلَيْهِ بَدَأَ بِنَفْسِهِ