The Sunnah about Mahr
Al-Kāfi|Volume 5|Book 3|Chapter 45
6- وَرَوَى حَمَّادٌ عَنْ إِبْرَاهِيمَ بْنِ أَبِي يَحْيَى عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ وَكَانَتِ الدَّرَاهِمُ وَزْنَ سِتَّةٍ يَوْمَئِذٍ.
6. And Hammad has narrated from Ibrahim ibn abu Yahya who has said the following: “Abu ‘Abd Allah عليه السلام, has said, ‘The weight of dirham in those days was six.’”
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