Yahya related to me from Malik from Urwa ibn Husayn from A'isha
bint Qudama that her father said, "When I used to come to Uthman ibn
Affan to collect my allowance he would ask me, 'Do you have any
property on which zakat is due? 'If I said, 'Yes,' he would deduct
the zakat on that property from my allowance, and if I said, 'No,' he
would pay me my allowance (in full)."
Muwatta Malik Book 17, Hadith 5