1642. hadíth
وَ رَوَى حَنَانُ بْنُ سَدِيرٍ عَنْ بُرْدٍ اَلْإِسْكَافِ قَالَ: قُلْتُ لِأَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ إِنِّي رَجُلٌ خَرَّازٌ وَ لاَ يَسْتَقِيمُ عَمَلُنَا إِلاَّ بِشَعْرِ اَلْخِنْزِيرِ نَخْرُزُ بِهِ قَالَ "خُذْ مِنْهُ وَبَرَةً فَاجْعَلْهَا فِي فَخَّارَةٍ ثُمَّ أَوْقِدْ تَحْتَهَا حَتَّى تُذْهِبَ دَسَمَهُ ثُمَّ اِعْمَلْ بِهِ".
And Hanan ibn Sadeer narrated from Burd al-Iskafi who said: I said to Abu Abdullah (a.s): 'I am a shoemaker, and our work cannot be done without using pig hair to sew with.' Imam (a.s) said: 'Take a single bristle from it and place it in a clay pot, then light a fire underneath it until its grease is removed. After that, you may work with it.'"