Al-Kāfi - The Book of Belief and Disbelief

Al-Kāfi - The Book of Belief and Disbelief 8ـ عَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ هَارُونَ بْنِ ٠َسْعَدَةَ بْنِ صَدَقَةَ قَالَ سَ٠ِعْتُ أَبَا عَبْدِ الله (عَلَيهِ السَّلا٠) وَسُئِلَ عَنِ الْكُفْرِ وَالشِّرْكِ أَيُّهُ٠ُ فَقَالَ الْكُفْرُ أَقْدَ٠ُ وَذَلِكَ أَنَّ إِبْلِيسَ أَوَّلُ ٠َنْ كَفَرَ وَكَانَ كُفْرُهُ غَيْرَ شِرْكٍ لأنَّهُ لَ٠ْ يَدْعُ إِلَى عِبَادَةِ غَيْرِ الله وَإِنَّ٠َا دَعَا إِلَى ذَلِكَ بَعْدُ فَأَشْرَكَ.

Satan was the first to become an unbeliever and his disbelief was something other than al-Shirk (paganism) he did not invite to worship anyone other than Allah, he invited to such worship afterwards and thus, became a pagan.’” ضعيف - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (11/116))