Hajar al-Aswad (The Black Stone), which is set in the eastern corner of the Ka’bah. Tawaf is started and ended by facing this sacred stone. Throughout the ages, innumerable people including many of the Prophets (upon them be peace), the Prophet Muhammad (peace and blessings of Allah be on him) himself, the Sahabah (may Allah be pleased with them), pious personalities and millions of Muslims who have performed Hajj and Umrah have placed their blessed lips on it.
The Hajar al-Aswad was brought from Jannah and presented to Ebrahim (upon him be peace) to be placed on the corner of the Ka’bah. Ibn Abbas (may Allah be pleased with him) narrated that the Prophet (peace and blessings of Allah be on him) said: “The Black Stone came down from Paradise and it was whiter than milk, but the sins of the sons of Adam turned it black.” [Tirmidhi]
The Maqame Ebrahim refers to the stone on which Ebrahim (upon him be peace) stood on while he was building the Ka’bah. As Ismail (upon him be peace) passed stones to Ebrahim (upon him be peace), and as Ebrahim (upon him be peace) continued laying them in place the Maqame Ebrahim miraculously continued rising higher and higher as the walls rose. Allah (Glorified and Exalted is He) caused the trace of his footprints to remain on the stone as a reminder to the believers among his descendants.
“The Hajr al-Aswad and al-Maqam (Ebrahim) are two jewels from the jewels of Paradise. Had Allah (Glorified and Exalted is He) not concealed their radiance, they would illuminate everything between the East and the West.” [Tirmidhi]

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In Surah Al-Imran, Allah (Glorified and Exalted is He) states: “Verily, the first House (of worship) appointed for mankind was that at Bakkah (Makkah), full of blessing, and a guidance for Al-Alamin (mankind and jinn).” [3:96]

When the Muslims conquered Makkah. The Prophet (peace and blessings of Allah be on him) said, “Allah had made this city sacred the day He created the heavens and the earth and it’s sanctity shall remain until the Day of Qiyamah (Day of Judgement). Its thorns cannot be broken, its animals cannot be harmed and things fallen on its ground cannot be picked up unless with the intention of returning it to its owner or making public announcements (to locate the owner). It is also forbidden to cut the grass that (naturally) grows here.” [Muslim]
The Prophet (peace and blessings of Allah be on him) said: “A prayer in this mosque of mine is better than one thousand prayers anywhere else, except for al-Masjid al-Haram. A prayer in al-Masjid al-Haram is better than one hundred thousand prayers (anywhere else).” [Ahmad]

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