It is narrated from Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) that when I came from Yemen to the service of the Prophet (peace and blessings of Allah be upon him), at that time he was in Batha. The Prophet (peace and blessings of Allah be upon him) saw me in the state of Ihram and asked, "With what intention have you put on Ihram?" I replied, "With the intention with which the Prophet (peace and blessings of Allah be upon him) has put on Ihram; my Ihram is the same as his." Then he asked, "Have you brought a sacrificial animal with you?" I replied, "No!" He said, "Then perform Tawaf of the Ka'bah, do Sa'i between Safa and Marwah, and become halal (come out of Ihram)." So I performed Tawaf of the House of Allah, did Sa'i between Safa and Marwah, then went to a woman from my people; she combed my hair and washed my head with water. Later, during the caliphate of the two Shaykhs (may Allah be pleased with them), I continued to tell people the same ruling. One day during the days of Hajj, I was standing somewhere when a man came to me and said, "Do you not know what new rulings the Commander of the Faithful has issued regarding the matters of Hajj?" Upon this, I said, "O people! Whoever I have given a fatwa to, let him listen: here is the Commander of the Faithful, follow him." When Sayyiduna Umar (may Allah be pleased with him) arrived, I asked him, "What new ruling have you issued in the rites of Hajj?" He replied, "If we take the Noble Qur'an, it commands us to complete Hajj and 'Umrah, and if we take the Sunnah of the Prophet (peace and blessings of Allah be upon him), then the Prophet (peace and blessings of Allah be upon him) did not come out of Ihram before sacrificing the animal." (Benefit: In fact, Sayyiduna Umar (may Allah be pleased with him) had prohibited combining both Hajj and 'Umrah in a single journey; this is what is mentioned here.)