 ٦ـ مُحَمَّدٌ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنِ النَّضْرِ بْنِ سُوَيْدٍ عَنْ عَبْدِ الله بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) أَنَّهُ سَأَلَهُ عَنْ قَوْلِ الله عَزَّ وَجَلَّ وَلَقَدْ كَتَبْنا فِي الزَّبُورِ مِنْ بَعْدِ الذِّكْرِ مَا الزَّبُورُ وَمَا الذِّكْرُ قَالَ الذِّكْرُ عِنْدَ الله وَالزَّبُورُ الَّذِي أُنْزِلَ عَلَى دَاوُدَ وَكُلُّ كِتَابٍ نَزَلَ فَهُوَ عِنْدَ أَهْلِ الْعِلْمِ وَنَحْنُ هُمْ.
 6. Muhammad has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from al-Nadr ibn Suwayd from ‘Adallah ibn Sinan who has said that he asked abu ‘Abdallah  the following about the meaning of the words of Allah, the Most Holy, the Most High. “We have written in the psalms which We had revealed after the Torah. .” (21:105). What is al-Zabur and what is al-Dhikr?” The Imams  said, “Al-Dhikr is with Allah and al-Zabur is what He gave to David.” Every book that was revealed is with the people of knowledge and we are the people of knowledge.”