Al-Kāfi
Hadith 13902ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ حَمَّادِ بْنِ عِيسَى عَنْ حَرِيزٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلام) قَالَ وَالله إِنَّ الْكُفْرَ لأقْدَمُ مِنَ الشِّرْكِ وَأَخْبَثُ وَأَعْظَمُ قَالَ ثُمَّ ذَكَرَ كُفْرَ إِبْلِيسَ حِينَ قَالَ الله لَهُ اسْجُدْ لآِدَمَ فَأَبَى أَنْ يَسْجُدَ فَالْكُفْرُ أَعْظَمُ مِنَ الشِّرْكِ فَمَنِ اخْتَارَ عَلَى الله عَزَّ وَجَلَّ وَأَبَى الطَّاعَةَ وَأَقَامَ عَلَى الْكَبَائِرِ فَهُوَ كَافِرٌ وَمَنْ نَصَبَ دِيناً غَيْرَ دِينِ الْمُؤْمِنِينَ فَهُوَ مُشْرِكٌ.
2. Ali ibn Ibrahim has narrated from his father from Hammad ibn ‘Isa from Hariz from Zurara from Abu Ja’far (a.s.) who has said the following: “By Allah, disbelief is older than polytheism and more vile and greater (in filth.) The narrator has said that the Imam then mentioned the disbelief of Iblis when Allah said to him: 'Prostrate to Adam,' but he refused to prostrate. Thus, disbelief is greater than polytheism. So, whoever chooses anything over Allah, Exalted and Mighty, and refuses to obey, and persists in major sins, he is a disbeliever. And whoever establishes a religion other than the religion of the believers, he is a polytheist."