Dua #1100•Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 3/476. See also 472. The 'something' that was referred to in this Hadith was a cane.

The Takbîr passing the black stone

Hisnul Muslim
#1100

طَافَ النَّبيُّ صلى الله عليه وسلم بِالْبَيْتِ عَلَى بَعِيرٍ كُلَّمَا أَتَى الرُّكْنَ أَشَارَ إِلَيْهِ بِشَيْءٍ عِنْدَهُ وَكَبَّرَ

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