The Book of Virtues
وَحَدَّثَنِي سُوَيْدُ بْنُ سَعِيدٍ، حَدَّثَنَا حَفْصُ بْنُ مَيْسَرَةَ، عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم بِمِثْلِ حَدِيثِ عُبَيْدِ اللَّهِ .A hadith like this has been narrated on the authority of Ibn Umar through another chain of transmitters
From Sahih Muslim, whose reports the scholars accept as authentic.