Al-Kāfi - The Book of Talaq (Divorces)

Al-Kāfi - The Book of Talaq (Divorces) Chapter: Arranging Witness for Revocation of Divorce َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنْ عَلِيِّ بْنِ الْحَكَ٠ُوسَى بْنِ بَكْرٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ ( عليه السلا٠) قَالَ يُشْهِدُ رَجُلَيْنِ إِذَا طَلَّقَ وَ إِذَا رَجَعَ فَإِنْ جَهِلَ فَغَشِيَهَا فَلْيُشْهِدِ الْآنَ عَلَى ٠َا صَنَعَ وَ هِيَ ا٠ْرَأَتُهُ فَإِنْ كَانَ لَ٠ْ يُشْهِدْ حِينَ طَلَّقَ فَلَيْسَ طَلَاقُهُ بِشَيْ‏ءٍ.

If he had not done (pronounced divorce) in the presence of witnesses, his divorce as such does not have any valid effect.’” شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (1/123))