General Behavior (Kitab Al-Adab)
43/128. Chapter:
A man should begin with his own name when writing a letter
Sunan Abi Dawud
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الرَّحِيمِ، حَدَّثَنَا الْمُعَلَّى بْنُ مَنْصُورٍ، أَخْبَرَنَا هُشَيْمٌ، عَنْ مَنْصُورٍ، عَنِ ابْنِ سِيرِينَ، عَنِ ابْنِ الْعَلاَءِ، عَنِ الْعَلاَءِ، - يَعْنِي ابْنَ الْحَضْرَمِيِّ - أَنَّهُ كَتَبَ إِلَى النَّبِيِّ صلى الله عليه وسلم فَبَدَأَ بِاسْمِهِ .
Ibn al-Ala said : Al-Ala b. al-Hadrami wrote to the prophet (May peace be upon him), and he began with his name.
Reference : Sunan Abi Dawud 5135In-book reference : Book 43, Hadith 363English translation : Book 42, Hadith 5116