(3) باب التَّشْمِيرِ فِي الثِّيَابِ
Narrated Abu Juhaifa:
I saw Bilal bringing a short spear (or stick) and fixing it in the ground, and then he proclaimed the Iqama of the prayer, and I saw Allah's Messenger (ﷺ) coming out, wearing a cloak with its sleeves rolled up. He then offered a two-rak`at prayer while facing the stick, and I saw the people and animals passing in front of him beyond the stick.
Reference: Sahih al-Bukhari 5786
In-book reference: Book 77, Hadith 4
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 72, Hadith 677