Al-Kāfi

Hadith 1832
heedlessness
الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُعَلَّى بْنِ مُحَمَّدٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ إِبْرَاهِيمَ الْأَرْمَنِيِّ عَنِ الْحَسَنِ بْنِ عَلِيِّ بْنِ يَقْطِينٍ عَنْ أَبِي جَعْفَرٍ ( عليه السلام ) قَالَ مَنْ أَصْغَى إِلَى نَاطِقٍ فَقَدْ عَبَدَهُ فَإِنْ كَانَ النَّاطِقُ يُؤَدِّي عَنِ اللَّهِ عَزَّ وَ جَلَّ فَقَدْ عَبَدَ اللَّهَ وَ إِنْ كَانَ النَّاطِقُ يُؤَدِّي عَنِ الشَّيْطَانِ فَقَدْ عَبَدَ الشَّيْطَانَ .
24. Al-Husayn ibn Muhammad has narrated from Mu‘alla’ ibn Muhammad from Ahmad ibn Muhammad from ibn Ibrahim al-Armaniy from al-Hassan ibn Ali ibn Yaqtin who has said the following: “Abu Ja‘far (a.s.), has said, ‘If one listens to a speaker he worships him. If the speaker conveys from Allah, most Majestic, most Glorious, he has worshipped Allah; but if he conveys from Satan he has worshipped Satan.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī