Thawāb al-Aʿmāl wa ʿiqāb al-Aʿmāl

Hadith 236
fastingimam-ja-farahl-al-bayt
وَ بِهَذَا الْإِسْنَادِ عَنِ الْحُسَیْنِ بْنِ سَعِیدٍ عَنِ ابْنِ أَبِی عُمَیْرٍ عَنْ عُثْمَانَ بْنِ عِیسَی عَنْ سَمَاعَهَ بْنِ مِهْرَانَ قَالَ: قُلْتُ لِأَبِی عَبْدِ اللَّهِ ع هَلْ صَامَ أَحَدٌ مِنْ آبَائِکَ شَعْبَانَ فَقَالَ خَیْرُ آبَائِی رَسُولُ اللَّهِ ص صَامَهُ.
10. And from the previous chain from al-Hussain b. Sa’eed from Ibn Abi ’Umayr from Uthman b. Isa from Sama’a b. Mihran who said: The narrator asked Imam Ja’far Sadiq (a.s.), “Did any of your ancestors fast during the month of Shaban?” Imam (a.s.) replied, “Yes, my greatest ancestor the Holy Prophet (s.a.w.s.) fasted in Shaban.”
Source: Shaykh Muḥammad b. ʿAlī al-Ṣaduq