It is narrated from Hazrat Abu Masood (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) once pointed with his blessed hand towards Yemen and said twice, "Iman (faith) is here." Remember! Hardness and harshness of hearts are found among those arrogant ones who are owners of camels, from where the horn of Satan appears, that is, in the tribes named Rabi'ah and Mudar.