´It was narrated that Ibn ‘Umar said:` “A small spear (Harbah) would be brought out to the Prophet (ﷺ) when he was travelling; he would plant it (in the ground) to perform prayer while facing it.”
Hadith ReferenceSunan Ibn Majah / Establishing the Prayer and the Sunnah Regarding Them / Hadith: 941
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم