What is the Quran and Sunnah view on Nepotism?

I can only find one thing online, but I am not sure of it's validity as I can't find it on any of the traditional sunni reputable websites. >Abdul Malik ibn ‘Umayr reported: Umar ibn al-Khattab, may Allah be pleased with him, said, “Whoever employs a man among his loved ones or relatives, employing him for no other reason besides that, then he has betrayed Allah, His messenger, and the believers.” >عن عبد الملك بن عُمَير قال قال عمرُ بن الخطاب رضي الله عنه مَن اسْتعملَ رجلاً لِمَوَدَّة أو لِقَرابَةٍ لا يستعمِلُه إلاَّ لذلك فقد خانَ اللَّهَ وَرَسُولَهُ والمؤمِنينَ Source: (Musnad al-Fārūq 740)