´It was narrated that Abu Sa'eed Al-Khudri said:` "A man form among the Ansar had a she-camel which used to graze in front of Uhud. Something happened to it, and he slaughtered it with a stake,"- (Ayyub, one of the narrators, said) I said to Zaid:' A stake of wood or of iron?" He said "No of wood."- "Then he went to the Prophet and asked him, and he told him to eat it." (Sahih )
Hadith Referenceسنن نسائي / كتاب الضحايا / 4407
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:إسناده صحيح
"Ordered" means either permission was granted or an actual command is intended, because according to the Shari‘ah, it is not permissible to waste something that is lawful (halal).
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 4407