Muwatta Malik 864
موطأ مالك#864SahihYahya related to me from Malik from Thawr ibn Zayd ad-Dili that lkrama, the mawla of Ibn Abbas, said, (and Thawr believed it to be from Abdullah ibn Abbas), "Someone who has intercourse with his wife before he has done the tawaf al-ifada should do an umra and sacrifice an animal
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: 20:160