Jami` at-Tirmidhi 487
جامع الترمذي#487HasanUmar bin Al-Khattab [may Allah be pleased with him] said:"No one should sell in our markets except one who has understanding in the religion
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirHasan Isnaad
Al-AlbaniHasan Isnaad
Bashar Awad MaaroufHasan
Zubair Ali ZaiIsnaad Hasan
In-book reference: 3:35