عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ خَالِدٍ عَنْ مُحَمَّدِ بْنِ عَلِيٍّ عَنِ الْعَبَّاسِ بْنِ مُوسَى عَنْ أَبِيهِ قَالَ سَأَلْتُهُ عَنِ الْإِبْرِيسَمِ وَ الْقَزِّ قَالَ هُمَا سَوَاءٌ
9. A number of our people have narrated from Ahmad ibn Muhammad ibn Khalid from Muhammad ibn Ali from al-‘Abbas ibn Musa from his father who has said the following: “I once asked him (the Imam) , about abrisam and al-Qazz (kinds of silk from silk worm). He (the Imam) said, ‘They are the same.’” 