It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "All of creation is the family of Allah, so the most beloved of people to Allah is the one who treats His family well."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated these two hadiths from al-Hakam except Musa bin Umayr."
Hadith Referenceالمعجم الأوسط / باب الميم / 5541
Hadith Takhrij«أخرجه الطبراني فى «الكبير» برقم: 10033»