Sahih al-Bukhari
Sahih al-Bukhari 1613
To say Takbir in front of the Corner (having the Black Stone)
Arabic hadith text
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا خَالِدُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا خَالِدٌ الْحَذَّاءُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَطَافَ النَّبِيُّ صلى الله عليه وسلم بِالْبَيْتِ عَلَى بَعِيرٍ، كُلَّمَا أَتَى الرُّكْنَ أَشَارَ إِلَيْهِ بِشَىْءٍ كَانَ عِنْدَهُ وَكَبَّرَ.تَابَعَهُ إِبْرَاهِيمُ بْنُ طَهْمَانَ عَنْ خَالِدٍ الْحَذَّاءِ
Translation
Narrated Ibn `Abbas
The Prophet (ﷺ) performed Tawaf of the Ka`ba riding a camel, and every time he came in front of the Corner (having the Black Stone), he pointed towards it with something he had with him and said Takbir.