Differing grades
Sunan Ibn Majah 3457
“I heard Abu Ubayy bin Umm Haram, who had prayed with the Messenger of Allah (ﷺ) facing both the Qiblah, saying: ‘I heard the Messenger of Allah (ﷺ) say: “You should use senna and the Sannut, for in them there is healing for every disease, except the Sam.” It was said: “O Messenger of Allah, what…
" عَلَيْكُمْ بِالسَّنَى وَالسَّنُّوتِ فَإِنَّ فِيهِمَا شِفَاءً مِنْ كُلِّ دَاءٍ إِلاَّ السَّامَ . قِيلَ يَا رَسُولَ اللَّهِ وَمَا السَّامُ قَالَ " الْمَوْتُ "