It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: I had forbidden you from keeping the meat of sacrifice for more than three days, now you may eat it and store it for as long as you wish.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11543
Hadith Gradingحکم دارالسلام:إسناده صحيح متصل، م: 1973