732 - وَ سَأَلَ زُرَارَةُ أَبَا جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: عَنِ اَلْبَوْلِ يَكُونُ عَلَى اَلسَّطْحِ أَوْ فِي اَلْمَكَانِ اَلَّذِي يُصَلَّى فِيهِ فَقَالَ «إِذَا جَفَّفَتْهُ اَلشَّمْسُ فَصَلِّ عَلَيْهِ فَهُوَ طَاهِرٌ.
Hadith.732 – Zurarah asked Imam Muhammad ibn Ali Al-Baqir 
about urine that is present on a rooftop or in a place where one prays.
Imam said: "If the sun dries it, then you may pray on it, for it is purified”.
