Sunan Ibn Majah 1934
سنن ابن ماجه#1934Sahihحَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا أَبُو عَامِرٍ، عَنْ زَمْعَةَ بْنِ صَالِحٍ، عَنْ سَلَمَةَ بْنِ وَهْرَامَ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ لَعَنَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ الْمُحَلِّلَ وَالْمُحَلَّلَ لَهُ .
It was narrated that Ibn 'Abbas said:“The Messenger of Allah cursed the Muhallil and the Muhallal lahu.”
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih Lighairihi
Zubair Ali ZaiSahih
In-book reference: 9:90