It is narrated from Sayyiduna Arib al-Mulayki (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said concerning the saying of Allah Almighty, "And others besides them whom you do not know; Allah knows them" [Surah al-Anfal: 60], that it refers to the jinn. And the Prophet (peace and blessings be upon him) also said: "A house in which there is a horse of fine breed is not harmed (by the evil of the jinn)."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14578