Al-Kāfi
Hadith 434عَلِيٌّ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَفْصِ بْنِ الْبَخْتَرِيِّ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ إِذَا الْتَقَى الْخِتَانَانِ وَجَبَ الْمَهْرُ وَ الْعِدَّةُ وَ الْغُسْلُ .
2. Ali has narrated from his father from Ibn Abi ‘Umayr from Hafs ibn al-Bakhtariy who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘When the two organs meet, mahr (dower), waiting period and Ghusl (bath) become obligatory.’”