Ibn Shihab al-Zuhri (may Allah have mercy on him) says in the hadith that he (peace and blessings be upon him) said to us: "Charity is the dirt of people, and it is permissible neither for Muhammad (peace and blessings be upon him) nor for his family."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الصدقات / 13240