It is narrated from the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), concerning the meat of the sacrificial animals, that she said: "We used to prepare it (for preserving), and some people would come to Madinah, and they would not eat it beyond three days. This was not a binding command ('azimah); rather, he (peace and blessings be upon him) intended that they feed (the needy) from it."
No one narrated it from Yahya bin Sa'id (may Allah have mercy on him) except Hisham bin Urwah (may Allah have mercy on him), and no one from al-Layth bin Sa'd (may Allah have mercy on him) except Abdullah bin Salih (may Allah have mercy on him).
It is like this in the Dar al-Haramayn printing, and it will come likewise later (in hadith number 3127), whereas in Sahih al-Bukhari and others the wording narrated is 'numallihu' (we would salt it to preserve it).
Hadith Referenceالمعجم الأوسط / باب الباء / 3086
Hadith Takhrij«أخرجه البخاري فى «صحيحه» برقم: 5570، والبيهقي فى «السنن الكبرى» برقم: 19286، والبزار فى «مسنده» برقم: 310 / 285، والطحاوي فى «شرح معاني الآثار» برقم: 6288، والطبراني فى «الأوسط» برقم: 3127»