Sayyiduna Abu Hurayrah (may Allah be pleased with him) reports this saying of the Prophet (peace and blessings be upon him): Kill the dogs. The people of Madinah said: O Messenger of Allah, they benefit us; they are among our sheep and goats and in our fields (doing the work of guarding). The Prophet (peace and blessings be upon him) said: Kill those among them that are bahim (entirely black in colour). About the bahim, people say: It is a jinn.
Al-Bazzar recorded it; its narrators are the narrators of the Sahih, except Sa'id bin Bahr, the teacher of al-Bazzar; I have not found anyone who has written a biography of him.