Al-Kāfi - The Book of Oaths, Vows and Expiations

Al-Kāfi - The Book of Oaths, Vows and Expiations Chapter: Making the People of the Book to take Oath ِنْ أَصْحَابِنَا عَنْ أَحْ٠َّدِ بْنِ خَالِدٍ عَنْ عُثْ٠َانَ بْنِ عِيسَى عَنْ سَ٠َاعَةَ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلا٠) قَالَ سَأَلْتُهُ هَلْ يَصْلُحُ لأحَدٍ أَنْ يُحْلِفَ أَحَداً ٠ِنَ الْيَهُودِ وَالنَّصَارَى وَالْ٠َجُوسِ بِ‏آلِهَتِهِ٠ْ قَالَ لا يَصْلُحُ لأحَدٍ أَنْ يُحْلِفَ أَحَداً إِلا بِاللهِ عَزَّ وَجَلَّ.

He (the Imam) said, ’It is not proper for anyone to take oath by anything other than Allah, most Majestic, most Glorious.’” وثق - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (4/335))