Jami` at-Tirmidhi 1946
جامع الترمذي#1946Da'ifAbu Bakr As-Siddiq narrated that the Messenger of Allah said :"The one who treats his slaves badly will not enter paradise
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiDaif
In-book reference: 27:52