لَمَّا انْقَضَى أَمْرُ الْمَخْلُوعِ[1] وَ اسْتَوَى الْأَمْرُ لِلْمَأْمُونِ كَتَبَ إِلَى الرِّضَا ع يَسْتَقْدِمُهُ إِلَى خُرَاسَانَ فَاعْتَلَّ عَلَيْهِ أَبُو الْحَسَنِ ع بِعِلَلٍ فَلَمْ يَزَلِ الْمَأْمُونُ يُكَاتِبُهُ فِي ذَلِكَ حَتَّى عَلِمَ أَنَّهُ لَا مَحِيصَ لَهُ وَ أَنَّهُ لَا يَكُفُّ عَنْهُ فَخَرَجَ ع وَ لِأَبِي جَعْفَرٍ ع سَبْعُ سِنِينَ فَكَتَبَ إِلَيْهِ الْمَأْمُونُ لَا تَأْخُذْ عَلَى طَرِيقِ الْجَبَلِ وَ قُم
7. Ali ibn Ibrahim has narrated from from Yasir al-Khadim and al-Rayyan ibn al-Salt all have said the following. “When the matter of the deposed Caliph (Amin) ended and it was established for al-Ma’mun he wrote to al-Rida asking to come to Khurasan. Abu al-Hassan (a.s.) in reply presented certain reason to justify his