The Holy Kaaba is the Ancient House of Allah; it is held in high esteem by the Muslims. The Prophet (blessings and peace of Allah be upon him) entered it in the year of the Conquest of Makkah. In this hadith, ‘Abdullah ibn ‘Umar (may Allah be pleased with him) narrates that when the Prophet (blessings and peace of Allah be upon him) came to Mecca in the year of the conquest, 8 AH, he entered the Kaaba, and Usamah ibn Zayd, Bilal and ‘Uthman ibn Talhah al-Hajabi entered with him. When the Prophet (blessings and peace of Allah be upon him) entered it, he closed the door, lest the people crowd around him and be harmed as a result of pushing and shoving. He (blessings and peace of Allah be upon him) stayed inside the House for a while, then they all came out. Ibn ‘Umar asked Bilal (may Allah be pleased with him): What did the Prophet (blessings and peace of Allah be upon him) do inside the Kaaba? Bilal said: He stood with one pillar on his left, another pillar on his right, and three pillars behind him. At that time, the House was built on six pillars, which were in two rows, with three pillars in each row. Then he prayed. The Prophet (blessings and peace of Allah be upon him) stood with the three pillars that are nearest to the door of the House behind him, and he went forward to the front pillars, and prayed in between two of them. This hadith indicates that the Kaaba had a door that could be opened and closed, which remained the case during the Jahiliyyah and after Islam came. The Prophet (blessings and peace of Allah be upon him) left it as it was, without changing anything, and he gave the key of the Kaaba to ‘Uthman ibn Talhah, to remain in his custody as it had been before. Closing the door does not prevent people from achieving the same purpose of worshipping Allah around it. All mosques are only built for the purpose of worshipping Allah, so closing them unnecessarily prevents the fulfilment of the purpose for which they were built. However, in the case of the Kaaba, worship is done around it, not inside it. The most specific act of worship that is connected to the Kaaba is tawaf (circumambulation), which is only done around it. After that comes prayer, which is only done facing towards it. This hadith may be reconciled with the hadith of Ibn ‘Abbas (may Allah be pleased with him) in Sahih al-Bukhari – in which it says: “[The Prophet (blessings and peace of Allah be upon him)] entered the Kaaba and said takbir throughout its interior, and he did not pray in it” – by noting that the affirmation of Bilal takes precedence over the negation of anyone else, because Ibn ‘Abbas (may Allah be pleased with him) was not with the Prophet (blessings and peace of Allah be upon him) on that day; rather he attributed his negation on one occasion to Usamah and on another occasion to his brother al-Fadl. It was said: It may be that the Prophet (blessings and peace of Allah be upon him) entered the Kaaba on two occasions, on one of which he prayed and on the other occasion he did not pray. This hadith indicates that it is acceptable to pray inside the Kaaba. It also indicates that the one who does not know may ask one who has knowledge..