Muwatta Imam Malik Book of Sadaqa, Hadith 13

Yahya related to me from Malik that he heard that the Messenger of Allah ﷺ said, "Sadaqa to the family of Muhammad is not halal. It is only people's impurities."

حَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " لاَ تَحِلُّ الصَّدَقَةُ لآلِ مُحَمَّدٍ إِنَّمَا هِيَ أَوْسَاخُ النَّاسِ " .