وَعَنْ أُمِّ الْحُصَيْنِ
قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِنْ أُمِّرَ عَلَيْكُمْ عَبْدٌ مُجَدَّعٌ يَقُودُكُمْ بِكِتَابِ اللَّهِ فَاسْمَعُوا لَهُ وَأَطيعُوا»
Umm al-Husain reported God’s Messenger as saying, “If a slave who has been mutilated is made your commander and leads you in accordance with God’s Book, listen to him and obey.”
Mishkat al-Masabih 3507, Book 19, The Offices of Commander and Qadi, Hadith 2. 1 min read