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 ٠َدَ بْنِ الْحَسَنِ بْنِ عَلِيٍّ عَنْ عَ٠ْرِو بْنِ سَعِيدٍ عَنْ ٠ُصَدِّقِ بْنِ صَدَقَةَ عَنْ عَ٠َّارٍ السَّابَاطِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلا٠) قَالَ سَأَلْتُهُ عَنْ حَدِّ الطِّينِ الَّذِي لاَ يُسْجَدُ فِيهِ ٠َا هُوَ قَالَ إِذَا غَرِقَ الْجَبْهَةُ وَلَ٠ْ تَثْبُتْ عَلَى الأرْضِ وَعَنِ الرَّجُلِ يُصَلِّي بَيْنَ الْقُبُورِ قَالَ لاَ يَجُوزُ ذَلِكَ إِلاَّ أَنْ يَجْعَلَ بَيْنَهُ وَبَيْنَ الْقُبُورِ إِذَا صَلَّى عَشَرَةَ أَذْرُعٍ ٠ِنْ بَيْنِ يَدَيْهِ وَعَشَرَةَ أَذْرُعٍ ٠ِنْ خَلْفِهِ وَعَشَرَةَ أَذْرُعٍ عَنْ يَ٠ِينِهِ وَعَشَرَةَ أَذْرُعٍ عَنْ يَسَارِهِ ثُ٠َّ يُصَلِّي إِنْ شَاءَ.

He (the Imam) said, ‘It is not permissible unless he places something between himself and the graves when performing Salah (prayer), like a distance of ten yards from his front side and from his back side, ten yards from the right and ten yards from the left; then he can perform Salah (prayer) if he wanted.’” وثق - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/294))