Sayyiduna Abu Hurairah, may Allah be pleased with him, narrates this statement of the Prophet Muhammad, peace and blessings be upon him: "When a person uses stones, he should do so in an odd number, because Allah Almighty is Odd and He loves the odd. Have you not seen? The heavens are seven, the days are seven, the circuits of Tawaf are seven." Then the Prophet Muhammad, peace and blessings be upon him, mentioned some other things as well.