Language:
كتاب الحج
25  
Hajj (Pilgrimage)
(74)
Chapter: A sick person may perform Tawaf while riding
(74)
باب الْمَرِيضِ يَطُوفُ رَاكِبًا
Sahih al-Bukhari 1632

Narrated Ibn `Abbas:

Allah's Messenger (ﷺ) performed Tawaf (of the Ka`ba) riding a camel (at that time the Prophet (ﷺ) had a foot injury). Whenever he came to the Corner (having the Black Stone) he would point out towards it with a thing in his hand and say, "Allahu-Akbar."

حَدَّثَنِي إِسْحَاقُ الْوَاسِطِيُّ، حَدَّثَنَا خَالِدٌ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم طَافَ بِالْبَيْتِ، وَهْوَ عَلَى بَعِيرٍ، كُلَّمَا أَتَى عَلَى الرُّكْنِ أَشَارَ إِلَيْهِ بِشَىْءٍ فِي يَدِهِ وَكَبَّرَ‏.‏
Reference : Sahih al-Bukhari 1632
In-book reference : Book 25, Hadith 115
USC-MSA web (English) reference : Vol. 2, Book 26, Hadith 697
  (deprecated numbering scheme)