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."
USC-MSA web (English) reference | : Book 20, Hadith 158 |
Arabic reference | : Book 20, Hadith 861 |