Yahya related to me from Malik that Ibn Shihab said, "If someone dedicates an animal as compensation, or for a vow, or as the sacrifice for tamattu, and misfortune befalls it on the road, he must provide a substitute."
Muwatta Malik Book 20, Hadith 160
← Previous Hadith Yahya related to me from Malik from Thawr ibn Zayd ad-Dili from Abdullah ibn Abbas the same as that.

Muwatta Malik Book 20, Hadith 159 Next Hadith → Yahya related to me from Malik from Nafi that Abdullah ibn Umar said, "If someone dedicates an animal and then it goes astray or dies, he should provide a substitute, if it was for a vow. If, however, it was voluntary, then he can either provide a substitute for it or not, as he wishes."

Muwatta Malik Book 20, Hadith 161