Al-Kāfi

Hadith 1143
call-to-prayer
23ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنِ النَّضْرِ بْنِ سُوَيْدٍ عَنْ يَحْيَى بْنِ عِمْرَانَ بْنِ عَلِيٍّ الْحَلَبِيِّ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلام) عَنِ الأذَانِ قَبْلَ الْفَجْرِ فَقَالَ إِذَا كَانَ فِي جَمَاعَةٍ فَلاَ وَإِذَا كَانَ وَحْدَهُ فَلاَ بَأْسَ.
23. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from al-Husayn ibn Sa‘id from al-Nadr ibn Suwayd from Yahya ibn ‘Imran ibn Ali al-Halabiy who has said the following: “I once asked abu ‘Abd Allah (a.s.), about Adhan before dawn. He (the Imam) said, ‘If it is for congregation, it is not acceptable, but if one is alone, then it is not harmful.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī