Musnad Ahmad 30:878

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, I heard al-'Ala' narrating from his father, from Abu Hurayrah, from the Prophet, may Allah bless him and grant him peace, that he said: "Rights shall surely be rendered to their owners on the Day of Resurrection, until retribution is taken for the hornless sheep from the horned one that gored it."