مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 772
Prayer
The Sutra - Section 1
عَنِ ابْنِ عُمَرَ قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَغْدُو إِلَى الْمُصَلَّى وَالْعَنَزَةُ بَيْنَ يَدَيْهِ تُحْمَلُ وَتُنْصَبُ بِالْمُصَلَّى بَيْنَ يَدَيْهِ فَيصَلي إِلَيْهَا. رَوَاهُ البُخَارِيّ
Ibn ‘Umar said that the Prophet (ﷺ) would go out in the morning* to the place of prayer with a staff in front of him which was carried and set up in front of him in the place of prayer, and he would pray in its direction. * i.e. on the day of the 'Id. Bukhari transmitted it.
Mishkat al-Masabih, 772صَحِيح (الألباني)