AbuHurairah narrated that he heard the Messenger of Allah (ﷺ) say:
"Inblack seed there is healing for every disease, except the Sam." "Sam means death. And black seed is Shuwniz." (AR)
English reference (AR): Vol. 4, Book 31, Hadith 3447 (AR)
Arabic reference (AR): Book 31, Hadith 3573 (AR)