٣ - حَدَّثَنا تَمِيمُ بْنِ عَبْدِ اللَّه بْنِ تَمِيمُ القُرَشِي رَضِىَاللهُ عَنْهُ قالَ حَدَّثَنا أَبي عَنْ أَحْمَدِ بْنِ عَلِى الأَنْصارِي قالَ سَأَلْتُ أَبَا الصَّلْتِ الْهَرَوِيَّ فَقُلْتُ كَيْفَ طَابَتْ نَفْسُ الْمَأْمُونِ بِقَتْلِ الرِّضَا عَلَيْهِ السَّلامُ مَعَ إِكْرَامِهِ وَمَحَبَّتِهِ لَهُ وَمَا جَعَلَ لَهُ مِنْ وِلايَةِ الْعَهْدِ بَعْدَهُ فَقَالَ إِنَّ الْمَأْمُونَ إِنَّمَا كَانَ يُكْرِمُهُ وَيُحِبُّهُ لِمَعْرِفَتِهِ بِفَضْلِهِ وَجَعَلَ لَهُ وِلايَةَ الْعَهْدِ مِنْ بَعْدِهِ لِيُرِيَ النَّاسَ أَنَّهُ رَاغِبٌ فِي الدُّنْيَا فَيَسْقُطَ مَحَلُّهُ مِنْ نُفُوسِهِمْ فَلَمَّا لَمْ يَظْهَرْ مِنْهُ فِي ذَلِكَ لِلنَّاسِ إِلا مَا ازْدَادَ بِهِ فَضْلاً عِنْدَهُمْ وَمَحَلّاً فِي نُفُوسِهِمْ جَلَبَ عَلَيْهِ الْمُتَكَلِّمِينَ مِنَ الْبُلْدَانِ طَمَعاً مِنْ أَنْ يَقْطَعَهُ وَاحِدٌ مِنْهُمْ فَيَسْقُطَ مَحَلُّهُ عِنْدَ الْعُلَمَاءِ وَبِسَبَبِهِمْ يَشْتَهِرُ نَقْصُهُ عِنْدَ الْعَامَّةِ فَكَانَ لا يُكَلِّمُهُ خَصْمٌ مِنَ الْيَهُودِ وَالنَّصَارَى وَالَْمجُوسِ وَالصَّابِئِينَ وَالْبَرَاهِمَةِ وَالْمُلْحِدِينَ وَالدَّهْرِيَّةِ وَلا خَصْمٍ مِنْ فِرَقِ الْمُسْلِمِينَ الُْمخَالِفِينَ لَهُ إِلا قَطَعَهُ وَأَلْزَمَهُ الْحُجَّةَ وَكَانَ النَّاسُ يَقُولُونَ وَاللَّهِ إِنَّهُ أَوْلَى بِالْخِلافَةِ مِنَ الْمَأْمُونِ فَكَانَ أَصْحَابُ الأَخْبَارِ يَرْفَعُونَ ذَلِكَ إِلَيْهِ فَيَغْتَاظُ مِنْ ذَلِكَ وَيَشْتَدُّ حَسَدُهُ وَكَانَ الرِّضَا عَلَيْهِ السَّلامُ لا يُحَابِي الْمَأْمُونَ مِنْ حَقٍّ وَكَانَ يُجِيبُهُ بِمَا يَكْرَهُ فِي أَكْثَرِ أَحْوَالِهِ فَيَغِيظُهُ ذَلِكَ وَيَحْقِدُهُ عَلَيْهِ وَلا يُظْهِرُهُ لَهُ فَلَمَّا أَعْيَتْهُ الْحِيلَةُ فِي أَمْرِهِ اغْتَالَهُ فَقَتَلَهُ بِالسَّمِّ.
59-3 Tamim ibn Abdullah ibn Tamim al-Qurashi - may God be pleased with him - narrated that his father quoted on the authority of Ahmad ibn Ali Al-Ansari that he asked Aba Salt al-Harawi, “How could Al-Ma’mun - who honored Ar-Ridha’  so much that he designated him  to be the successor to his throne - stand to murder Ar-Ridha’ ?” Aba Salt al-Harawi replied, “Indeed Al-Ma’mun knew about the degree of nobility of Ar-Ridha’ . That is why he honored him and loved him. The reason that he set Ar-Ridha’  up as the successor to the throne after himself was that he wanted the people to think that Ar-Ridha’  is inclined to worldly affairs, and then Ar-Ridha’  would lose his place in the people’s hearts. However, when what he had plotted did not happen. And the nobility of the Imam  was increased amongst the people and his position was strengthened in the hearts of the people. Then Al-Ma’mun invited speakers from the various countries eagerly hoping that they might be able to overcome Ar-Ridha’  in their debate resulting in his deficiencies becoming apparent for the people. However none of them - whether the Jews, the Christians, the Magi, the Sabians, the Brahmans, the unbelievers, the adherers to the doctrine of the eternity of the world, and the opponents from the various Muslim sects were able to defeat Ar-Ridha’’s  arguments. And they were all convinced by his arguments and proofs. Then the people said, ‘By God! Ar-Ridha’  is more deserving than Al-Ma’mun to be the Caliph.’ The reporters reported this news to Al-Ma’mun. He got really angry about this and his jealousy increased. However, Ar-Ridha’  did not fear Al-Ma’mun and clearly expressed the truth. Ar-Ridha’  often replied to Al-Ma’mun in such a way that Al-Ma’mun did not like. Then Al-Ma’mun would become angry and hold a grudge against Ar-Ridha’ , but he never made it known. Once all his plots against Ar-Ridha’  failed, he killed him with poison.”