Al-Kāfi
Hadith 15183- عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ أَبِي عَبْدِ اللهِ عَنْ أَبِيهِ عَنْ خَلَفِ بْنِ حَمَّادٍ عَنْ رِبْعِيِّ بْنِ عَبْدِ اللهِ عَنِ الْفُضَيْلِ بْنِ يَسَارٍ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) فِي الرَّجُلِ يَتَزَوَّجُ الْمَرْأَةَ وَلا يَجْعَلُ فِي نَفْسِهِ أَنْ يُعْطِيَهَا مَهْرَهَا فَهُوَ زِنًى.
3. A number of our people have narrated from Ahmad ibn abu ‘Abd Allah from his father from Khalaf ibn Hammad from ibn Rib’iy ibn ‘Abd Allah from al-Fudayl ibn Yasar who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘If a man marries a woman and does not tell his soul to pay her mahr (dower) it is fornication.’”