The Book on Government
وَحَدَّثَنَاهُ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَأَبُو كُرَيْبٍ قَالاَ حَدَّثَنَا ابْنُ فُضَيْلٍ، عَنْ عُمَارَةَ، بِهَذَا الإِسْنَادِ .The same tradition has been melted through another chain of transmitters
From Sahih Muslim, whose reports the scholars accept as authentic.