٥ـ عَلِيٌّ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ بْنِ عَمَّارٍ عَنْ أَبِي الْحَسَنِ مُوسَى (عَلَيهِ السَّلام) فِي الظُّهُورِ الَّتِي فِيهَا ذِكْرُ الله عَزَّ وَجَلَّ قَالَ اغْسِلْهَا.
5. Ali has narrated from his father from Ibn Abi ‘Umayr from Muhammad ibn Ishaq ibn ‘Ammar from abu al-Hassan Musa  who has said the following: “The Imam  was asked about the surfaces on which a mention of Allah, the Most Majestic, the Most Holy, is written. The Imam said, ‘Wash it clean.’” 