Maliks Muwatta Book 23, Hadith Number 12.

Section : The Sacrificial Animal for the Child in the Womb and Mention of the Days of Sacrifice.

Yahya related to me from Malik from Nafi that Abdullah ibn Umar said, “The sacrifice can be done up to two days after the Day of Sacrifice.”

Yahya related to me from Malik that he had heard the same from Ali ibn Abi Talib.