Al-Kāfi - The Book of Prayer

Chapter: Performing Salah (Prayer) Inside Ka’bah, on its Top, al-Biya 4, Churches and Places where Performing Salah (prayer) Is Undesirable َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّادٍ عَنْ حَرِيزٍ عَنْ زُرَارَةَ وَحَدِيدٍ قَالاَ قُلْنَا لأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلا٠) السَّطْحُ يُصِيبُهُ الْبَوْلُ أَوْ يُبَالُ عَلَيْهِ أَ يُصَلَّى فِي ذَلِكَ الْ٠َكَانِ فَقَالَ إِنْ كَانَ تُصِيبُهُ الشَّ٠ْسُ وَالرِّيحُ وَكَانَ جَافّاً فَلاَ بَأْسَ بِهِ إِلاَّ أَنْ يَكُونَ يُتَّخَذُ ٠23.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad, from Hammad from Hariz from Zurarah and Ali ibn Hadid who have said the following: “We once asked abu ‘Abd Allah (a.s.), about a roof on which there is urine. Can one perform Salah (prayer) there?

He (the Imam) said, ‘If sun rays and wind can reach it and it is dry, there is no offense in it unless it is used as a urinating place.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (15/298))