مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 1473, 1474
Prayer
The Sacrifices - Section 3
وَعَنْ نَافِعٍ أَنَّ ابْنَ عُمَرَ قَالَ: الْأَضْحَى يَوْمَانِ بعد يَوْم الْأَضْحَى. رَوَاهُ مَالك وَقَالَ: وَبَلَغَنِي عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ مثله
Nafi‘ reported Ibn ‘Umar as saying, “The festival of sacrifice lasts two days after the day of sacrifice.” Malik transmitted it, and he said he had heard something similar from ‘Alib. Abu Talib.
Mishkat al-Masabih, 1473, 1474صَحِيح, ضَعِيف (الألباني)