Jami` at-Tirmidhi 1927
جامع الترمذي#1927SahihAbu Hurairah narrated that the Messenger of Allah said:: "The Muslim is the brother to the Muslim, he does not cheat him, lie to him, nor deceive him. All of the Muslim is unlawful to another Muslim: His Honor, his wealth, and his blood. At-taqwa is here. It is enough evil for a man that he belittle his brother Muslim
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan
Zubair Ali ZaiIsnaad Hasan
In-book reference: 27:33