The Messenger of Allah ﷺ said, "Keep to this black seed, for in it is a cure for every disease except sam."Someone asked, "Messenger of Allah, what is sam?"He replied, "Death."
Ahmad 9544
Sahih
حدثنا يزيد بن هارون ويعلى قالا حدثنا محمد بن عمرو مثله في الحبة السوداء