Al-Kāfi
Hadith 6652- عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ أَبِي عَبْدِ اللهِ الْبَرْقِيِّ رَفَعَهُ عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي عَبْدِ اللهِ قَالَ سَأَلْتُ أَبَا عَبْدِ اللهِ (عَلَيْهِ السَّلام) عَنْ بَيْعِ الْغَزْلِ بِالثِّيَابِ الْمَبْسُوطَةِ وَالْغَزْلُ أَكْثَرُ وَزْناً مِنَ الثِّيَابِ قَالَ لا بَأْسَ.
2. A number of our people have narrated from Ahmad ibn Muhammad from ibn abu ‘Abd Allah al-Barqiy in a marfu’ manner from ‘Abd al-Rahman ibn abu ‘Abd Allah who has said the following: “This is concerning my question before abu ‘Abd Allah (a.s.), about the case of exchanging yarns for expanded fabrics while the yarn is heavier than fabrics in weight. He (the Imam) said, ‘It is not harmful.’”