834 - وَ سَأَلَ دَاوُدُ بْنُ أَبِي زَيْدٍ أَبَا اَلْحَسَنِ اَلثَّالِثَ عَلَيْهِ اَلسَّلاَمُ: عَنِ اَلْقَرَاطِيسِ وَ اَلْكَوَاغِذِ اَلْمَكْتُوبَةِ عَلَيْهَا هَلْ يَجُوزُ عَلَيْهَا اَلسُّجُودُ فَكَتَبَ «يَجُوزُ.
Hadith.834 - Dawud ibn Abi Zayd asked Imam Abu al-Hasan al-Thalith 
about prostrating on papers and documents with writing on them.
The Imam wrote back: "It is permissible."
