Muwatta Malik 847
موطأ مالك#847SahihYahya related to me from Malik from Nafi that Abdullah ibn Umar said, when nicking the hump of his sacrificial animal to brand it, "In the name of Allah, and Allah is greater
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: 20:143