٢ - حَدَّثَنا الحُسَيْنُ بْنُ إِبْراهيمَ بْنِ أَحْمَدِ بْنِ هِشامٍ المُؤَدِّبُ رَضِىَ اللهُ عَنْهُ قالَ: حَدَّثَنا عَلِىُّ بْنُ هاشِمٍ، عَنْ مُحَمَّدِ بْنِ عِيسَى بْنِ عُبِيْدٍ، عَنْ مُوسَى بْنِ القاسِمِ البَجَليِّ، عَنْ عَلِىِّ بْنِ جَعْفَرٍ قالَ: جاءَنِي مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ جَعْفَرِ بْنِ مُحَمَّدٍ، وَذَكَرَ لي: أَنَّ مُحَمَّدَ بْنِ جَعْفَرٍ دَخَلَ عَلَى هارُون الرَّشِيدِ فَسَلَّمَ عَلَيْهِ بِالْخِلافَةِ، ثُمَّ قالَ لَهُ: ما ظَنَنْتُ أَنَّ فِي الأَرْضِ خَلِيفَتَيْنِ حَتّى‏ رَأَيْتُ أَخِي مُوسَى بْنِ جَعْفَرٍ يُسَلِّمُ عَلَيْهِ بِالْخِلافَةِ.وَكانَ مِمَّنْ سَعى‏ بِمُوسَى بْنِ جَعْفَرٍعَلَيْهِمَا السَّلاَمُ يَعْقُوبُ بْنُ داوُدَ، وَكانَ يَرى‏ رأْيَ الزَّيْدِيَّة.
7-2 Al-Hussein ibn Ibrahim ibn Ahmad ibn Hisham al-Mu’addib - may God be pleased with him - narrated that Ali ibn Ibrahim ibn Hashem quoted on the authority of Muhammad ibn Isa ibn Obayd, on the authority of Musa ibn Al-Qasim al-Bajali, on the authority of Ali ibn Ja’far (s), “Muhammad ibn Isma’il ibn Ja’far ibn Muhammad (Imam Kadhim’s brother) came to me and said, “Muhammad ibn Ja’far went to see Harun Ar-Rashid and greeted him as the Caliph. He then told him, ‘I did not think that there were two Caliphs on the Earth until I saw that they greet my brother Musa ibn Ja’far as the Caliph.’”One of the people who said bad things behind Musa ibn Ja’far’s (s) back was Yaqoob ibn Dawood. He was one of the Zaydites.