Imam Ahmad : 7937

حَدَّثَنَا أَبُو عَامِرٍ حَدَّثَنَا عَبْدُ اللَّهِ عَنْ عُثْمَانَ بْنِ مُحَمَّدٍ عَنِ الْمَقْبُرِيِّ عَنْ أَبِي هُرَيْرَةَ قَالَ لَعَنَ رَسُولُ اللَّهِ الْمُحِلَّ وَالْمُحَلَّلَ لَهُ

Narrated to us [Abu 'Amir] Narrated to us [Abdullah] from [Uthman bin Muhammad] from [Al Maqburi] from [Abu Hurairah], he said: Rasulullah peace and blessings be upon him cursed the people of Al Muhallil and Al Muhallal lahu.