فِي مِيزَابَيْنِ سَالا أَحَدُهُمَا بَوْلٌ وَ الْآخَرُ مَاءُ الْمَطَرِ فَاخْتَلَطَا فَأَصَابَ ثَوْبَ رَجُلٍ لَمْ يَضُرَّهُ ذَلِكَ.
“I once asked abu ’Abd Allah (a.s.), about two drain-shoots; one is rain water and the other urine which mix with each other and drops thereof sprinkle over one’s clothes. He (the Imam) said, ‘It is not harmful (when it still is raining).”’