What to do if the sacrificial animal of a person on whom the sacrifice is not obligatory dies? 2639799919

Sacrifice is not obligatory on us. But last year in Aftabnagar, when the price of cattle fell, a brother and I bought two cows. Later I brought it to the area in a pickup van. While unloading the cows from the van, both the cows got severe injuries on their legs. Due to the pain, my cow developed a fever and at one stage died on the morning before Eid. And even though his brother's cow could be sacrificed, it was not possible to sacrifice it at home. Because the cow was not able to walk in pain. So the cow is tied in that place till the day of Eid. I want to know from Huzur, should I have bought a new animal in this situation? And the sacrifice of the other brother's cow has been valid? 1792375457