Bulugh al-Maram, Book 6, Hadith 40 (In-Book)

Ibn 'Abbas (RAA) narrated that he used to kiss the Black Stone and prostrate himself on it. Related by Al-Hakim and Al-Baihaqi.

وَعَنْ اِبْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا: { أَنَّهُ كَانَ يُقَبِّلُ اَلْحَجَرَ اَلْأَسْوَدَ وَيَسْجُدُ عَلَيْهِ } رَوَاهُ اَلْحَاكِمُ مَرْفُوعًا, وَالْبَيْهَقِيُّ مَوْقُوفًا 1‏.‏ ‏1 ‏- صحيح مرفوعا وموقوفا.‏

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also referenced under: Book 6, Hadith 766 (English)