 أَبِی ره قَالَ حَدَّثَنَا سَعْدُ بْنُ عَبْدِ اللَّهِ قَالَ حَدَّثَنَا إِبْرَاهِیمُ بْنُ هَاشِمٍ عَنِ الْقَاسِمِ بْنِ یَحْیَی عَنْ جَدِّهِ الْحَسَنِ بْنِ رَاشِدٍ عَنْ أَبِی عَبْدِ اللَّهِ ع قَالَ: قُلْتُ جُعِلْتُ فِدَاکَ لِلْمُسْلِمِینَ عِیدٌ غَیْرُ الْعِیدَیْنِ قَالَ نَعَمْ یَا حَسَنُ أَعْظَمُهُمَا وَ أَشْرَفُهُمَا قَالَ قُلْتُ لَهُ وَ أَیُّ یَوْمٍ هُوَ قَالَ یَوْمٌ نُصِبَ أَمِیرُ الْمُؤْمِنِینَ ع عَلَماً عَلَی النَّاسِ قُلْتُ جُعِلْتُ فِدَاکَ وَ أَیُّ یَوْمٍ هُوَ قَالَ إِنَّ الْأَیَّامَ تَدُورُ وَ هُوَ یَوْمُ ثَمَانِیَهَ عَشَرَ مِنْ ذِی الْحِجَّهِ قَالَ قُلْتُ جُعِلْتُ فِدَاکَ وَ مَا یَنْبَغِی لَنَا أَنْ نَصْنَعَ فِیهِ قَالَ تَصُومُهُ یَا حَسَنُ وَ تُکْثِرُ الصَّلَاهَ فِیهِ عَلَی مُحَمَّدٍ وَ أَهْلِ بَیْتِهِ وَ تَتَبَرَّأُ إِلَی اللَّهِ مِمَّنْ ظَلَمَهُمْ وَ جَحَدَ حَقَّهُمْ فَإِنَّ الْأَنْبِیَاءَ ع کَانَتْ تَأْمُرُ الْأَوْصِیَاءَ بِالْیَوْمِ الَّذِی کَانَ یُقَامُ فِیهِ الْوَصِیُّ أَنْ یُتَّخَذَ عِیداً قَالَ قُلْتُ مَا لِمَنْ صَامَهُ مِنَّا قَالَ صِیَامُ سِتِّینَ شَهْراً وَ لَا تَدَعْ صِیَامَ یَوْمِ سَبْعَهٍ وَ عِشْرِینَ مِنْ رَجَبٍ فَإِنَّهُ هُوَ الْیَوْمُ الَّذِی أُنْزِلَتْ فِیهِ النُّبُوَّهُ عَلَی مُحَمَّدٍ ص وَ ثَوَابُهُ مِثْلُ سِتِّینَ شَهْراً لَکُمْ.
1. My father (rah) said: it was narrated to us by Sa’d b. Abdillah who said it was narrated to us by Ibrahim b. Hashim from al-Qasim b. Yahya from his grandfather al-Hassan b. Rashid from Abi Abdillah  who said: “Observe fast on this day and recite Durood on Muhammad (s.a.w.s.) and his progeny in excess. Also keep away from those people who troubled them and denied their rights. Prophets used to order to observe the day of appointment of their successor as Eid.” He asked, “What is the reward of a person fasting on this day?” Imam  replied, “He would get the reward of fasting for sixty months. Similarly don’t leave the fast on 27th Rajab for the Holy Prophet (s.a.w.s.) was appointed as prophet on this day and its reward is also equal to the fasts of sixty months.”