Sahih al-Bukhari 5423

It is related that 'Abis said, "I asked 'A'isha, 'Did the Prophet, may Allah bless him and grant him peace, forbid eating the meat of sacrifices [of 'Id al-Adha] for more than three days?' She answered, 'The Prophet, may Allah bless him and grant him peace, only did that in the year when the people were hungry and he wanted for the rich to feed the poor. Later we would store trotters and eat them after 15 days.' It was asked, 'What compelled you to do that?' She laughed and said, 'The family of Muhammad, may Allah bless him and grant him peace, never had their fill of wheat bread with condiments for three days until he met Allah.'" This is related from 'Abdu'r-Rahman ibn 'Abis.