Al-Kāfi - Volume 4 > The Time of Breaking Fast after Sunset
Hadith #3

3ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَمَّادٍ عَنِ الْحَلَبِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) قَالَ سُئِلَ عَنِ الإِفْطَارِ قَبْلَ الصَّلاةِ أَوْ بَعْدَهَا قَالَ إِنْ كَانَ مَعَهُ قَوْمٌ يَخْشَى أَنْ يَحْبِسَهُمْ عَنْ عَشَائِهِمْ فَلْيُفْطِرْ مَعَهُمْ وَإِنْ كَانَ غَيْرُ ذَلِكَ فَلْيُصَلِّ وَلْيُفْطِرْ.

3. Ali ibn Ibrahim has narrated from his father from ibn abu ‘Umayr from Hammad from al-Halabiy who has said the following: “I once asked abu ‘Abd Allah, ‘Alayhi al-Salam, about breaking fast if it is before or after Salat (prayer). He (the Imam) said, ‘If he (the Imam) is afraid of keeping them from their dinner, first it is breaking fast with them; otherwise, first is Salat (prayer), then it is breaking the fast.’”