وَحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، قَالَ الأَضْحَى يَوْمَانِ بَعْدَ يَوْمِ الأَضْحَى ‏.‏ وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ، مِثْلُ ذَلِكَ ‏.

Yahya related to me from Malik from Nafi that Abdullah ibn Umarsaid, "The sacrifice can be done up to two days after the Day ofSacrifice." Yahya related to me from Malik that he had heardthe same from Ali ibn Abi Talib. Translation Not Available

Book Ref: Muwatta Imam Malik Book 23 Hadith 1042
Web Ref:  Muwatta Imam Malik Book 23 Hadith 12