(104) باب مَا يَسْتُرُ الْمُصَلِّي
Ibn 'Umar said:
When the Messenger of Allah (ﷺ) would go out (for prayer) on the day of 'Id, he ordered to bring a lance, it was then setup in front of him and he would pray in its direction, and the people (stood) behind him. He used to do so during journey ; hence the rulers would take it (lance with them).
Reference: Sunan Abi Dawud 687
In-book reference: Book 2, Hadith 297
English translation: Book 2, Hadith 687