Abu Hurairah narrated that the Messenger of Allah (s.a.w) said:
"Use this black seed. For indeed it contains a cure for every disease except As-Sam" And As-Sam is death. (JA)
English reference (JA): Vol. 4, Book 2, Hadith 2041 (JA)
Arabic reference (JA): Book 28, Hadith 2176 (JA)