811 - وَ كَتَبَ إِلَيْهِ: فِي اَلرَّجُلِ يَجْعَلُ فِي جُبَّتِهِ بَدَلَ اَلْقُطْنِ قَزّاً هَلْ يُصَلِّي فِيهِ فَكَتَبَ «نَعَمْ لاَ بَأْسَ بِهِ."
Hadith.811 - He (Ibrahim ibn Mahziyar) wrote to Imam Abu Muhammad al-Hasan 
asking about a man who replaces cotton in his cloak with qazz (a type of silk):
"Can he pray in it?"
Imam replied: "Yes, there is no problem with it."
