Nafi' says that Abu Salamah asked Abdullah bin Umar (may Allah be pleased with them both) one day after the day of sacrifice, saying: I wish to offer a sacrifice. So Abdullah bin Umar (may Allah be pleased with them both) said: Whoever wishes to sacrifice today, and tomorrow as well, may do so.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19253
Nafi' narrates from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that after the day of Eid al-Adha there are two further days for sacrifice. (b) Sayyiduna Ali (may Allah be pleased with him) says that after the day of Eid al-Adha there are two further days of sacrifice.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19254
Qatadah (may Allah have mercy on him) narrates from Sayyiduna Anas (may Allah be pleased with him): "After the day of Eid al-Adha there are two more days for sacrifice."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19255