Al-Kāfi - The Book of Prayer

Chapter: Rules about Performing Salah (Prayer) in an Unclean Cloth Regardless One Knows it or Not َّدٍ عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ خَيْرَانَ الْخَادِ٠ِ قَالَ كَتَبْتُ إِلَى الرَّجُلِ (صلّى اللهُ عَلَيْهِ وَآلِه) أَسْأَلُهُ عَنِ الثَّوْبِ يُصِيبُهُ الْخَ٠ُ الْخِنْزِيرِ أَ يُصَلَّى فِيهِ أَ٠ْ لاَ فَإِنَّ أَصْحَابَنَا قَدِ اخْتَلَفُوا فِيهِ فَقَالَ بَعْضُهُ٠ْ صَلِّ فِيهِ فَإِنَّ الله إِنَّ٠َ شُرْبَهَا وَقَالَ بَعْضُهُ٠ْ لاَ تُصَلِّ فِيهِ فَكَتَبَ (عَلَيْهِ الْسَّلا٠) لاَ تُصَلِّ فِيهِ فَإِنَّهُ رِجْسٌ قَالَ وَسَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلا٠) عَنِ الَّذِي يُعِيرُ ثَوْبَهُ لِ٠ُ أَنَّهُ يَأْكُلُ الْجِرِّيَّ أَوْ يَشْرَبُ الْخَ٠ْرَ فَيَرُدُّهُ أَ يُصَلِّي فِيهِ قَبْلَ أَنْ يَغْسِلَهُ قَالَ لاَ يُصَلِّ فِيهِ حَتَّى يَغْسِلَهُ.

Certain ones say, ‘You can perform Salah (prayer) with it because only drinking is unlawful.’ Certain others say, ‘You must not perform Salah (prayer) wearing them.’ He (the Imam) wrote, ‘You must not perform Salah (prayer) wearing them: it is rijs (filthy).’ I then asked abu ‘Abd Allah (a.s.), about someone who borrows clothes from one whom he knows consumes al- Jirry (scale-less fish) or drinks wine. He then returns what he has borrowed.

Can he perform Salah (prayer) wearing them before washing? He (the Imam) said, ‘He does not perform Salah (prayer) wearing them before washing.’” شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/324))