It was narrated that Aisha(ra) said: The messenger of Allah(ﷺ) was asked during the campaign of Tabuk about the Sutra of one who is praying. He said: Something as high as the back of a camel saddle.
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.