We did not eat the flesh of sacrificed animals beyond three (days), but then Allah's Messenger (ﷺ) commanded us to make it a provision for journey and cat it (beyond three days).
Sahih Muslim Book 35, Hadith 43
← Previous Hadith We did not eat the flesh of our sacrificial animals beyond three days in Mina. Then Allah's Messenger (ﷺ) permitted us saying: Eat and make it a provision (for journey). I asked 'Ata' whether Jabir had also said: Till we came to Medina. He said: Yes.

Sahih Muslim Book 35, Hadith 42 Next Hadith → We made provision (out of the flesh of sacrificed animals for our journey) to Medina during the lifetime of Allah's Messenger (ﷺ).

Sahih Muslim Book 35, Hadith 44