(1) باب مَا جَاءَ فِي دُعَاءِ النَّبِيِّ صلى الله عليه وسلم أُمَّتَهُ إِلَى تَوْحِيدِ اللَّهِ تَبَارَكَ وَتَعَلَى
Narrated Ibn 'Abbas (ra):
The Prophet (ﷺ) sent Mu'adh to Yemen.
Reference: Sahih al-Bukhari 7371
In-book reference: Book 97, Hadith 1
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 93, Hadith 469