A blind man, Hazrat Abul ‘Abbaas bin Nafees Al-Muqri (rahimahullah) mentions:

On one occasion, when I was in Madinah Munawwarah, I suffered hunger for three days. In this condition, I went to the blessed grave of Rasulullah (sallallahu ‘alaihi wasallam) and said, “O Rasulullah (sallallahu ‘alaihi wasallam)! I am suffering from hunger.” Thereafter, on account of the great weakness in my body, I fell asleep.