Ibn Abbas (may Allah be pleased with him) reported that the Prophet (peace and blessings be upon him) said: “The Black Stone came down from Jannah (Paradise).”(At-Tirmidhi, Sunan, hadith no. 877, and classified as authentic hadith by Sheikh Al-Albaani in his book Sahih At-Tirmidthi, hadith no. 695 )
More hadith on the origin of Black Stone :
1)According to the Hadith, Hadhrat Abdullah ibn Abbaas (Radhiallaahu Anhu)narrates that Rasulullah (Sallallaahu Alayhi Wasallam) said, ‘Hajr-e-Aswad(the black stone) was revealed from Jannat and it was whiter than milk.Thereafter, the sins of man had blackened it.’ (Tirmidhi vol.1 pg.166; HMSaeed)
2)In another Hadith, Abdullah ibn Amr (Radhiallaahu Anhu) says, ‘I heard the messenger of Allah saying, ‘Verily the Rukn (Hajr-e-Aswad) and the Maqaam (Ibraahim) are two precious stones from amongst the precious stones of Jannat. Allah Ta’ala took away its Noor (light). Had Allah not taken away its light then these two would have brightened up the east and west.’ (Ibid)
Present Location of Hajr e Aswad/ the kaaba Stone
Hajr e Aswad(the black stone ) is located at the east Corner of Kaaba. Pilgrims stops at Hajr e Aswad and Kiss the Stone saying “Bismillah-AllahuAkbar ” and “Allahu Akbar”.The Stone looks black Polished and shining and there is rarely a time when no one is touching It and glorifying Allah.Black Stone is a Stone from Heaven and Muslim Kiss it following the Rituals of Prophet Muhammad (pbuh).