Sayyidah Aishah (may Allah be pleased with her) said: I said: All your wives have entered the House except me. He (peace and blessings be upon him) said: "Go to your relatives; they will open the door for you too." She said: I went and said: The Prophet (peace and blessings be upon him) orders you to open the door for me. So he took the keys and went with her to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah (peace and blessings be upon him), the door of the House has never been opened at night, neither in the Jahiliyyah nor in Islam. So he (peace and blessings be upon him) said to Sayyidah Aishah (may Allah be pleased with her): "When your people built the House, their funds ran short, so they left part of the House in the area of the low wall (the Hijr). Go there and pray two rak'ahs."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9727