Muwatta Malik 583
موطأ مالك#583SahihYahya related to me from Malik from Nafi that Abdullah ibn Umar used to say, "Zakat does not have to be paid on property until a year has elapsed over it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Sahih
In-book reference: 17:6