Not graded
Muttafaq ‘alayh (Bukhari and Muslim) Riyad as-Salihin 1765
The Messenger of Allah (ﷺ) prohibited observing continuous fasts beyond one day. The Companions submitted: "But you do it." He replied, "I am not like you. I am given to eat and to drink (from Allah)." [Al-Bukhari and Muslim].
"إني لست مثلكم، إني أُطعم وأُسقى"