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

Talha b. ‘Ubaidallah reported God’s Messenger as saying, “When one of you places in front of him something such as the back of a saddle, he should pray without caring who passes on the other side of it.” Muslim transmitted it.