Jami` at-Tirmidhi 1088
جامع الترمذي#1088HasanAbu Al-Balj narrated from Muhammad bin Hatib Al-Jumahi who said that:The Messenger of Allah said: "The distinction between the lawful and the unlawful is the Duff and the voice
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirHasan
Al-AlbaniHasan
Bashar Awad MaaroufHasan
Zubair Ali ZaiIsnaad Hasan
In-book reference: 11:9