السَّنُّوت
Named alongside senna in a single hadith on healing, though classical commentators genuinely disagree on which plant 'sanoot' refers to — candidates include fennel, dill, cumin, or even a honey/ghee preparation.
عَلَيْكُمْ بِالسَّنَا وَالسَّنُّوتِ، فَإِنَّ فِيهِمَا شِفَاءً مِنْ كُلِّ دَاءٍ إِلَّا السَّامَ
“Use senna and sanoot, for in them there is healing from every disease except death itself.” (meaning, not a literal translation)
The existing Senna entry on this site covers the laxative half of this same hadith; this entry covers its lesser-known, disputed companion ingredient.
Ibn al-Qayyim and later commentators list several candidate identifications for sanoot without settling on one — an unusually honest gap in the classical commentary tradition.