٤ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ خَالِدٍ عَنْ عُثْمَانَ بْنِ عِيسَى عَنْ عَبْدِ الله بْنِ مُسْكَانَ عَنْ بَعْضِ أَصْحَابِهِ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ قُلْتُ لَهُ مَا الإسْلامُ فَقَالَ دِينُ الله اسْمُهُ الإسْلامُ وَهُوَ دِينُ الله قَبْلَ أَنْ تَكُونُوا حَيْثُ كُنْتُمْ وَبَعْدَ أَنْ تَكُونُوا فَمَنْ أَقَرَّ بِدِينِ الله فَهُوَ مُسْلِمٌ وَمَنْ عَمِلَ بِمَا أَمَرَ الله عَزَّ وَجَلَّ بِهِ فَهُوَ مُؤْمِنٌ.
4. A number of our people have narrated from Ahmad ibn Muhammad ibn Khalid from ‘Uthman ibn ‘Isa from ‘Abd Allah ibn Muskan from certain individuals of his people who has said the following: “I asked Abu ‘Abdillah  ‘What is Islam?’ He said, ‘It is the name of the religion of Allah. It was the religion of Allah before you were as you are now and after you it will be there. Whoever professes the religion of Allah, is a Muslim. Whoever does what Allah, the Most Majestic, the Most Holy, has commanded, is a believer.’” 