Yahya related to me from Malik that Ibn Shihab said, "If someonededicates an animal as compensation, or for a vow, or as the sacrificefor tamattu, and misfortune befalls it on the road, he must provide asubstitute." (RU)
USC-MSA web (English) reference: Book 20, Hadith 157 (RU)
Arabic reference (RU): Book 20, Hadith 860 (RU)