(Imām Bukhārī narrates): Ibrahim bin al-Mundhir narrated to us, he said: al-Walid narrated to us, he said: Abu Amr narrated to us, he said: Nafi' informed me from Ibn Umar, may Allāh be pleased with them both, he said that
the Prophet ﷺ used to go to the place of Eid prayer in the morning, and a spear would be carried in front of him and planted in front of him at the place of prayer, then he would pray towards it.
حَدَّثَنَا إِبْرَاهِيمُ بْنُ الْمُنْذِرِ الْحِزَامِيُّ قَالَ حَدَّثَنَا الْوَلِيدُ قَالَ حَدَّثَنَا أَبُو عَمْرٍو الْأَوْزَاعِيُّ قَالَ أَخْبَرَنِي نَافِعٌ عَنْ ابْنِ عُمَرَ قَالَ كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَغْدُو إِلَى الْمُصَلَّى وَالْعَنَزَةُ بَيْنَ يَدَيْهِ تُحْمَلُ وَتُنْصَبُ بِالْمُصَلَّى بَيْنَ يَدَيْهِ فَيُصَلِّي إِلَيْهَا
Reference: Sahih Al Bukhari 973