 ٩ـ أَحْمَدُ بْنُ مُحَمَّدٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ أَبِي نَصْرٍ قَالَ كَتَبْتُ إِلَى الرِّضَا (عَلَيْهِ السَّلام) كِتَاباً فَكَانَ فِي بَعْضِ مَا كَتَبْتُ قَالَ الله عَزَّ وَجَلَّ فَسْئَلُوا أَهْلَ الذِّكْرِ إِنْ كُنْتُمْ لا تَعْلَمُونَ وَقَالَ الله عَزَّ وَجَلَّ وَما كانَ الْمُؤْمِنُونَ لِيَنْفِرُوا كَافَّةً فَلَوْ لا نَفَرَ مِنْ كُلِّ فِرْقَةٍ مِنْهُمْ طائِفَةٌ لِيَتَفَقَّهُوا فِي الدِّينِ وَلِيُنْذِرُوا قَوْمَهُمْ إِذا رَجَعُوا إِلَيْهِمْ لَعَلَّهُمْ يَحْذَرُونَ فَقَدْ فُرِضَتْ عَلَيْهِمُ الْمَسْأَلَةُ وَلَمْ يُفْرَضْ عَلَيْكُمُ الْجَوَابُ قَالَ قَالَ الله تَبَارَكَ وَتَعَالَى فَإِنْ لَمْ يَسْتَجِيبُوا لَكَ فَاعْلَمْ أَنَّمإ؛٣٣ّّ يَتَّبِعُونَ أَهْواءَهُمْ وَمَنْ أَضَلُّ مِمَّنِ اتَّبَعَ هَواهُ.
 9. Ahmad ibn Muhammad has narrated from Ahmad ibn Muhammad ibn abu Nasr who has said that he wrote a letter to Imam al-Rida . Of the issues for which he requested explanation in the letter one was about the following words of Allah, Most Holy, the Most High. “Ask the people of Dhikr (people who remind of Allah) if you do not know.” The other question was about the words of Allah, the Most Holy, the Most High, “Not all believers have to become specialists in religious learning. Why do not some people from each group of believers seek to become specialists in religious learning and, after completing their studies, guide their group so that they will have fear of God.” (9:122) thus, it is obligatory for them to ask but it is not obligatory for you to answer.” The Imams  has said the following for the answer. “If they would not do what you would ask them, know that they are only following their (evil) desires. Who strays more than one who follows his desires without guidance from God? . .” (28:50)