Sunan Ibn Majah 3447
سنن ابن ماجه#3447SahihAbu Hurairah narrated that he heard the Messenger of Allah (ﷺ) say:“In black seed there is healing for every disease, except the Sam.” "Sam means death. And black seed is Shuwniz
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 31:12