It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him), he says: I bought a ram for sacrifice, but a wolf attacked it and took away its haunch. Then when I asked the Noble Prophet (peace and blessings be upon him) about this, he (peace and blessings be upon him) said: You can sacrifice it.
Hadith Takhrij«اسناده ضعيف لضعف جابر بن يزيد الجعفي، وجھالة محمد بن قرظة، أخرجه ابن ماجه: 3146 ، (انظر مسند أحمد ترقيم الرسالة: 11274 ترقیم بيت الأفكار الدولية: 11294»