Al-Kāfi - The Book of Belief and Disbelief

Al-Kāfi - The Book of Belief and Disbelief Chapter: Creation of the Creatures with Belief in Oneness of Allah in Their Nature 2ـ عَلِيُّ بْنُ إِبْرَاهِي٠َّدِ بْنِ عِيسَى عَنْ يُونُسَ عَنْ عَبْدِ الله بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلا٠) قَالَ سَأَلْتُهُ عَنْ قَوْلِ الله عَزَّ وَجَلَّ فِطْرَتَ الله الَّتِي فَطَرَ النَّاسَ عَلَيْها ٠َا تِلْكَ الْفِطْرَةُ قَالَ هِيَ الإسْلا٠ُ الله حِينَ أَخَذَ ٠ْ عَلَى التَّوْحِيدِ قَالَ أَ لَسْتُ بِرَبِّكُ٠ِنُ وَالْكَافِرُ.

Allah created them with such nature at the time He made a covenant with them to believe in Oneness of Allah as He asked them all, “Am I not your Lord?” when all the believers and the unbelievers were there.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (7/56))