١٥ - حَدَّثَنا الْحاكِم أَبُو عَلِي الحُسَيْنِ بْنِ أحْمَدالْبِيْهَقِيُّ قالَ حَدَّثَني مُحَمَّدِ بْنِ يَحْيَى الصُّوليُّ قالَ: حَدَّثَنا مُحَمَّدِ بْنِ يَزِيد النحوي قالَ حَدَّثَني ابْنِ أَبي عَبْدون، عَن أَبيهِ قالَ لَمَّا بَايَعَ الْمَأْمُونُ الرِّضَا عَلَيْهِ السَّلامُ بِالْعَهْدِ أَجْلَسَهُ إِلَى جَانِبِهِ فَقَامَ الْعَبَّاسُ الْخَطِيبُ فَتَكَلَّمَ فَأَحْسَنَ ثُمَّ خَتَمَ ذَلِكَ بِأَنْ أَنْشَدَ:لا بُدَّ لِلنَّاسِ مِنْ شَمْسٍ وَمِنْ قَمَرٍفَأَنْتَ شَمْسٌ وَهَذَا ذَلِــكَ الْقَمَر
40-15 Al-Hakim Abu Ali Al-Husayn ibn Ahmad al-Bayhaqi narrated that Muhammad ibn Yahya al-Sowli quoted on the authority of Muhammad ibn Yazid al-Nahvi, on the authority of Ibn Abi Abdoon, on the authority of his father, “When Al-Ma’mun pledged allegiance to Ar-Ridha’ , Al-Ma’mun had him  sit next to himself. Abbas - the orator - stood up, delivered a good speech and ended it with the following poem:People can’t live without the sun and the moonNow you are the sun and he is the moon.”