كتاب الصلاة
4
The Book of Prayers
(47)
Chapter: The Sutrah (Screen) For One Who Is Praying, And The Recommendation To Pray Facing A Sutrah. The Ruling On Passing In Front Of One Who Is Praying, And Preventing One Who Wants To Pass In Front. It Is Permissible To Lie Down In Front Of One Who Is Praying, Praying Towards One's Mount. The Command To Stand Close To The Sutrah. The Height Of The Suirah, And Related Matters
(47)
باب سُتْرَةِ الْمُصَلِّي ‏

Musa b. Talha reported it on the authority of his father:

The Messenger of Allah (ﷺ) said: When one of you places in front of him so me. thing such as the back of a saddle, he should pray without caring who passes on the other side of it.
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، وَقُتَيْبَةُ بْنُ سَعِيدٍ، وَأَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ قَالَ يَحْيَى أَخْبَرَنَا وَقَالَ الآخَرَانِ، حَدَّثَنَا أَبُو الأَحْوَصِ، عَنْ سِمَاكٍ، عَنْ مُوسَى بْنِ طَلْحَةَ، عَنْ أَبِيهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ إِذَا وَضَعَ أَحَدُكُمْ بَيْنَ يَدَيْهِ مِثْلَ مُؤْخِرَةِ الرَّحْلِ فَلْيُصَلِّ وَلاَ يُبَالِ مَنْ مَرَّ وَرَاءَ ذَلِكَ ‏"‏ ‏.‏
Reference : Sahih Muslim 499 a
In-book reference : Book 4, Hadith 273
English translation : Book 4, Hadith 1006