Al-Kāfi

Hadith 592
fastingramadanbrotherhood
1ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ عَنْ إِسْحَاقَ بْنِ عَمَّارٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ إِفْطَارُكَ لأَخِيكَ الْمُؤْمِنِ أَفْضَلُ مِنْ صِيَامِكَ تَطَوُّعاً.
1. A number of our people have narrated from Sahl ibn Ziyad from al-Hassan ibn Mahbub from Ishaq ibn ‘Ammar who has said the following: “Abu ‘ Abd Allah (a.s.), has said that your serving breakfasts to your brother (in belief) after sunset is more excellent than your fasting an optional fasting.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī