Sunan an-Nasa'i 4512
سنن النسائي#4512Sahihأَخْبَرَنَا الْحُسَيْنُ بْنُ حُرَيْثٍ الْمَرْوَزِيُّ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنِ عَطَاءِ بْنِ يَزِيدَ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ بَيْعَتَيْنِ عَنِ الْمُلاَمَسَةِ وَالْمُنَابَذَةِ .
It was narrated that Abu Sa'eed Al-Khudri said:"The messenger of Allah forbade two kinds of transactions: Mulamash and Mumabadha
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:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Bukhari
In-book reference: 44:64