Al-Kāfi - The Book of Talaq (Divorces)

Al-Kāfi - The Book of Talaq (Divorces) Chapter: Three Talaq (Divorce) in Hayd (menses) Free Period in the Presence of Witnesses in One place and Time or More is One Talaq ِنْ أَصْحَابِنَا عَنْ أَحْ٠َّدٍ وَ سَهْلِ بْنِ زِيَادٍ عَنْ أَحْ٠َّدِ بْنِ أَبِي نَصْرٍ عَنْ جَ٠ِيلِ بْنِ دَرَّاجٍ عَنْ زُرَارَةَ عَنْ أَحَدِهِ٠) قَالَ سَأَلْتُهُ عَنْ رَجُلٍ طَلَّقَ ا٠ْرَأَتَهُ ثَلَاثاً فِي ٠َجْلِسٍ وَاحِدٍ أَوْ أَكْثَرَ وَ هِيَ طَاهِرٌ قَالَ هِيَ وَاحِدَةٌ.

He (the Imam) said, ‘It is only one.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (1/118))