(4) باب سُتْرَةِ الْمُصَلِّي
Narrated Ibn Umar:
It was narrated from Ibn Umar concerning the Messenger of Allah (ﷺ) he said: "He used to set up a short spear then pray facing toward it."
Reference: Sunan an-Nasa'i 747
In-book reference: Book 9, Hadith 6
English translation: Vol. 1, Book 9, Hadith 748