ENOfficial
Ibn 'Abbas (RAA) narrated that he used to kiss the Black Stone and prostrate himself on it. Related by Al-Hakim and Al-Baihaqi.
Source: sunnah.com
Other translations
Arabic
وَعَنْ اِبْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا: { أَنَّهُ كَانَ يُقَبِّلُ اَلْحَجَرَ اَلْأَسْوَدَ وَيَسْجُدُ عَلَيْهِ } رَوَاهُ اَلْحَاكِمُ مَرْفُوعًا, وَالْبَيْهَقِيُّ مَوْقُوفًا 1 .
sunnah.com