728. hadíth
وَقَالَ اَلرِّضَا عَلَيْهِ اَلسَّلاَمُ: «كُلُّ طَرِيقٍ يُوطَأُ وَ يُتَطَرَّقُ كَانَتْ فِيهِ جَادَّةٌ أَوْ لَمْ تَكُنْ لاَ يَنْبَغِي اَلصَّلاَةُ فِيهِ» قِيلَ فَأَيْنَ يُصَلَّى قَالَ «يَمْنَةً وَ يَسْرَةً.
Imam Ali ibn Musa Ar-Ridha (a.s) said: "Any path that is trodden and commonly used, whether it has a main road or not, should not be used for prayer." He was asked: "Then where should one pray?" Imam (a.s) said: "To the right or to the left (of the path)."