Mishkat al-Masabih 30 Fine Qualities كتاب المناقب 245

وَعَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَوْ كُنْتُ مُؤَمِّرًا مِنْ غَيْرِ مَشُورَةٍ لَأَمَّرْتُ عَلَيْهِمُ ابْنَ أُمِّ عَبْدٍ» رَوَاهُ التِّرْمِذِيُّ وَابْنُ مَاجَهْ

`Ali reported God’s messenger as saying, “If I were to appoint anyone as commander without [need for] consultation I would appoint Ibn Umm `Abd.” Tirmidhi and Ibn Majah transmitted it.