808. hadíth
وَ رُوِيَ عَنْ يَحْيَى بْنِ أَبِي عِمْرَانَ أَنَّهُ قَالَ: كَتَبْتُ إِلَى أَبِي جَعْفَرٍ اَلثَّانِي عَلَيْهِ اَلسَّلاَمُ فِي اَلسِّنْجَابِ وَ اَلْفَنَكِ وَ اَلْخَزِّ وَ قُلْتُ جُعِلْتُ فِدَاكَ أُحِبُّ أَنْ لاَ تُجِيبَنِي بِالتَّقِيَّةِ فِي ذَلِكَ فَكَتَبَ بِخَطِّهِ إِلَيَّ «صَلِّ فِيهَا.
It was narrated from Yahya ibn Abi Imran that He said: ‘I wrote to Abu Ja'far al-Thani (Imam Muhammad ibn Ali Al-Jawad (a.s)) concerning clothing made from squirrel (sanjab), mink (fanak), and silk (khazz), and I said: 'May I be your ransom, I would like you not to respond with dissimulation (taqiyya) regarding this matter.' The Imam (a.s) wrote back in his own handwriting, 'Pray in them.'"